This repository has been archived by the owner on May 11, 2021. It is now read-only.
/
understanding_decimals_place_value.html
609 lines (567 loc) · 32.6 KB
/
understanding_decimals_place_value.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
<!DOCTYPE html>
<html data-require="math graphie word-problems jquery.mobile.vmouse">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Money and decimal place value intuition</title>
<script src="../khan-exercise.js"></script>
<style>
.column { float: left; height: 430px;
text-align: center;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-o-user-select: none;
user-select: none;
}
.columnhead {
font-size: 12px;
font-weight: bold;
}
.coin-column { position: relative; margin: 0px; float: left; left: 1px; z-index: 1; }
.place-value {
width: 55px; margin: 6px; line-height: 30px;
background-color: #eee; border-width: 1px; border-style: solid; border-color: #ddd; color: #ddd;
font-weight: bold; text-align: center; font-size: 20px;
cursor: pointer;
}
.bill {
width: 70px; margin: 10px 6px; line-height: 30px;
background-color: #eee; border-width: 1px; border-style: solid; border-color: #ddd; color: #ddd;
font-weight: bold; text-align: center; font-size: 20px;
cursor: pointer;
}
.bill:hover, .place-value:hover { border-color: #999; }
.coin { width: 51px; margin: 10px; line-height: 32px; color: #ddd; font-size: 20px; font-weight: bold; text-align: center; cursor: pointer; }
.thou-selected { background-color: #ff00af; border-color: #000; color: #fff; }
.hund-selected { background-color: #ffa500; border-color: #000; color: #fff; }
.ten-selected { background-color: #28ae7b; border-color: #000; color: #fff; }
.one-selected { background-color: #6495ed; border-color: #000; color: #fff; }
.tenth-selected { background-color: purple; border-color: #000; color: #fff; }
.hundth-selected { background-color: gray; border-color: #000; color: #fff; }
.thouth-selected { background-color: #a52a2a; border-color: #000; color: #fff; }
.dime { font-size: 17px; }
.dime-selected { color: #fff; }
.penny-selected { color: #fff; }
</style>
</head>
<body>
<div class="exercise">
<div class="vars">
<div data-ensure="!( THOUSANDS === 0 && HUNDREDS === 0 )">
<var id="THOUSANDS">randFromArray([ 0, randRange( 1, 9 ) ])</var>
<var id="HUNDREDS">randRange( 0, 9 )</var>
</div>
<var id="TENS">randRange( 0, 9 )</var>
<var id="ONES">randRange( 0, 9 )</var>
<var id="TENTHS">randRange( 0, 9 )</var>
</div>
<div class="problems">
<div id="place-value">
<div class="vars">
<var id="HUNDREDTHS">randRange( 0, 9 )</var>
<var id="THOUSANDTHS">randRange( 1, 9 )</var>
</div>
<p class="question">
Choose the right number of each place value to make<br>
<code>\Huge{
<span data-if="THOUSANDS !== 0">\color{<var>PINK</var>}{<var>THOUSANDS</var>}</span>
\color{<var>ORANGE</var>}{<var>HUNDREDS</var>}
\color{<var>GREEN</var>}{<var>TENS</var>}
\color{<var>BLUE</var>}{<var>ONES</var>}.
\color{purple}{<var>TENTHS</var>}
\color{gray}{<var>HUNDREDTHS</var>}
\color{#a52a2a}{<var>THOUSANDTHS</var>}
}</code>
</p>
<div class="problem">
<!--
If this didn't exist you would get the following error:
Uncaught TypeError: Cannot read property 'graph' of undefined
Because:
- Both problems use the same .hints.
- .hints uses .graphie.
- The other problem uses graphie so .hints's .graphies must use data-update.
-->
<div class="graphie" id="graph" style="display: none;"></div>
<div class="column">
<span class="columnhead">Thousands</span>
<div class="place-value thou" data-each="10 times">1000</div>
</div>
<div class="column">
<span class="columnhead">Hundreds</span>
<div class="place-value hund" data-each="10 times">100</div>
</div>
<div class="column">
<span class="columnhead">Tens</span>
<div class="place-value ten" data-each="10 times">10</div>
</div>
<div class="column">
<span class="columnhead">Ones</span>
<div class="place-value one" data-each="10 times">1</div>
</div>
<div class="column">
<span class="columnhead">Tenths</span>
<div class="place-value tenth" data-each="10 times">0.1</div>
</div>
<div class="column">
<span class="columnhead">Hundredths</span>
<div class="place-value hundth" data-each="10 times">0.01</div>
</div>
<div class="column">
<span class="columnhead">Thousandths</span>
<div class="place-value thouth" data-each="10 times">0.001</div>
</div>
<var>
(function() {
Khan.scratchpad.disable();
// click handlers
$( "#problemarea .thou" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'thou-selected' );
});
$( "#problemarea .hund" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'hund-selected' );
});
$( "#problemarea .ten" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'ten-selected' );
});
$( "#problemarea .one" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'one-selected' );
});
$( "#problemarea .tenth" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'tenth-selected' );
});
$( "#problemarea .hundth" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'hundth-selected' );
});
$( "#problemarea .thouth" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'thouth-selected' );
});
})()
</var>
<p style="clear: left"> </p>
</div>
<div class="solution" data-type="custom">
<div class="instruction">
Click on the numbers in rectangles to select them.
</div>
<div class="guess">digitsToInteger([
$( "#problemarea .thou-selected" ).length,
$( "#problemarea .hund-selected" ).length,
$( "#problemarea .ten-selected" ).length,
$( "#problemarea .one-selected" ).length,
$( "#problemarea .tenth-selected" ).length,
$( "#problemarea .hundth-selected" ).length,
$( "#problemarea .thouth-selected" ).length
]) / 1000
</div>
<div class="validator-function">
if ( guess === 0 ) {
return "";
} else {
return guess === ( digitsToInteger([ THOUSANDS, HUNDREDS, TENS, ONES, TENTHS, HUNDREDTHS, THOUSANDTHS ]) / 1000 );
}
</div>
<div class="show-guess">
var places = digits( guess * 1000 );
// unselect everything
$( "#problemarea .place-value" ).removeClass( 'thou-selected hund-selected ten-selected one-selected tenth-selected, hundth-selected, thouth-selected' );
// select the approprate number of each thing
$( "#problemarea .thou" ).slice( 0, places[6] || 0 ).addClass( 'thou-selected' );
$( "#problemarea .hund" ).slice( 0, places[5] || 0 ).addClass( 'hund-selected' );
$( "#problemarea .ten" ).slice( 0, places[4] || 0 ).addClass( 'ten-selected' );
$( "#problemarea .one" ).slice( 0, places[3] || 0 ).addClass( 'one-selected' );
$( "#problemarea .tenth" ).slice( 0, places[2] || 0 ).addClass( 'tenth-selected' );
$( "#problemarea .hundth" ).slice( 0, places[1] || 0 ).addClass( 'hundth-selected' );
$( "#problemarea .thouth" ).slice( 0, places[0] || 0 ).addClass( 'thouth-selected' );
</div>
<div class="example">click a number to select it</div>
<div class="example">click a number again to deselect it</div>
</div>
</div>
<div id="money">
<div class="vars">
<var id="HUNDREDTHS">randRange( 1, 9 )</var>
<var id="THOUSANDTHS">0</var>
</div>
<p class="question">
Choose the right number of bills and coins to make<br>
<code>\Huge{$
<span data-if="THOUSANDS !== 0">\color{<var>PINK</var>}{<var>THOUSANDS</var>}</span>
\color{<var>ORANGE</var>}{<var>HUNDREDS</var>}
\color{<var>GREEN</var>}{<var>TENS</var>}
\color{<var>BLUE</var>}{<var>ONES</var>}.
\color{purple}{<var>TENTHS</var>}
\color{gray}{<var>HUNDREDTHS</var>}
}</code>
</p>
<div class="problem">
<div class="column">
<span class="columnhead">Thousands</span>
<div class="bill thou" data-each="10 times">$1000</div>
</div>
<div class="column">
<span class="columnhead">Hundreds</span>
<div class="bill hund" data-each="10 times">$100</div>
</div>
<div class="column">
<span class="columnhead">Tens</span>
<div class="bill ten" data-each="10 times">$10</div>
</div>
<div class="column">
<span class="columnhead">Ones</span>
<div class="bill one" data-each="10 times">$1</div>
</div>
<div class="column">
<div class="coin-column">
<span class="columnhead">Tenths</span>
<div class="coin dime" data-each="10 times">10¢</div>
</div>
<div class="coin-column">
<span class="columnhead">Hundredths</span>
<div class="coin penny" data-each="10 times">1¢</div>
</div>
<div class="graphie" id="graph">
Khan.scratchpad.disable();
init({ range: [ [ 0, 143 ], [ -430, 22 ] ], scale: [ 1, 1 ] });
style({ fill: "#eee", stroke: "#ddd", strokeWidth: 1 });
graph.tenths = [];
graph.hundredths = [];
for ( var i = 0; i < 10; ++i ) {
graph.tenths.push( circle( [ 37, (-42 * i) - 26 ], 18 ) );
graph.hundredths.push( circle( [ 107, (-42 * i) - 26 ], 18 ) );
}
graph.getCoinCircle = function( coinEl ) {
var coins,
coin = $( coinEl );
if ( coin.hasClass( 'dime' ) ) {
coins = KhanUtil.currentGraph.graph.tenths;
} else {
coins = KhanUtil.currentGraph.graph.hundredths;
}
return coins[ coin.index() - 1 ];
}
// click handlers
$( "#problemarea .thou" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'thou-selected' );
});
$( "#problemarea .hund" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'hund-selected' );
});
$( "#problemarea .ten" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'ten-selected' );
});
$( "#problemarea .one" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'one-selected' );
});
$( "#problemarea .dime" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'dime-selected' );
if ( $( this ).hasClass( 'dime-selected' ) ) {
graph.getCoinCircle( this ).attr({ fill: 'purple', stroke: '#000' });
} else {
graph.getCoinCircle( this ).attr({ fill: '#eee', stroke: '#ddd' });
}
});
$( "#problemarea .penny" ).bind( "vmousedown", function( event ) {
event.preventDefault();
$( this ).toggleClass( 'penny-selected' );
if ( $( this ).hasClass( 'penny-selected' ) ) {
graph.getCoinCircle( this ).attr({ fill: 'gray', stroke: '#000' });
} else {
graph.getCoinCircle( this ).attr({ fill: '#eee', stroke: '#ddd' });
}
});
// mouseover handlers
$( "#problemarea .dime" ).bind( "vmouseover", function( event ) {
graph.getCoinCircle( this ).attr({ stroke: '#999' });
});
$( "#problemarea .penny" ).bind( "vmouseover", function( event ) {
graph.getCoinCircle( this ).attr({ stroke: '#999' });
});
// mouseout handlers
$( "#problemarea .dime" ).bind( "vmouseout", function( event ) {
if ( $( this ).hasClass( 'dime-selected' ) ) {
graph.getCoinCircle( this ).attr({ stroke: '#000' });
} else {
graph.getCoinCircle( this ).attr({ stroke: '#ddd' });
}
});
$( "#problemarea .penny" ).bind( "vmouseout", function( event ) {
if ( $( this ).hasClass( 'penny-selected' ) ) {
graph.getCoinCircle( this ).attr({ stroke: '#000' });
} else {
graph.getCoinCircle( this ).attr({ stroke: '#ddd' });
}
});
</div>
</div>
<p style="clear: left"> </p>
</div>
<div class="solution" data-type="custom">
<div class="instruction">
Click on the bills and coins to select them.
</div>
<div class="guess">digitsToInteger([
$( "#problemarea .thou-selected" ).length,
$( "#problemarea .hund-selected" ).length,
$( "#problemarea .ten-selected" ).length,
$( "#problemarea .one-selected" ).length,
$( "#problemarea .dime-selected" ).length,
$( "#problemarea .penny-selected" ).length
]) / 100
</div>
<div class="validator-function">
if ( guess === 0 ) {
return "";
} else {
return guess === ( digitsToInteger([ THOUSANDS, HUNDREDS, TENS, ONES, TENTHS, HUNDREDTHS ]) / 100 );
}
</div>
<div class="show-guess">
var places = digits( guess * 100 );
// unselect everything
$( "#problemarea .bill" ).removeClass( 'thou-selected hund-selected ten-selected one-selected' );
$( "#problemarea .dime" ).removeClass( 'dime-selected' );
$( "#problemarea .penny" ).removeClass( 'penny-selected' );
$.each( KhanUtil.currentGraph.graph.tenths, function() {
this.attr({ fill: '#eee', stroke: '#ddd' });
});
$.each( KhanUtil.currentGraph.graph.hundredths, function() {
this.attr({ fill: '#eee', stroke: '#ddd' });
});
// select the approprate number of each thing
$( "#problemarea .thou" ).slice( 0, places[5] || 0 ).addClass( 'thou-selected' );
$( "#problemarea .hund" ).slice( 0, places[4] || 0 ).addClass( 'hund-selected' );
$( "#problemarea .ten" ).slice( 0, places[3] || 0 ).addClass( 'ten-selected' );
$( "#problemarea .one" ).slice( 0, places[2] || 0 ).addClass( 'one-selected' );
$( "#problemarea .dime" ).slice( 0, places[1] || 0 ).addClass( 'dime-selected' );
$( "#problemarea .penny" ).slice( 0, places[0] || 0 ).addClass( 'penny-selected' );
for ( var i = 0; i < places[1]; ++i ) {
KhanUtil.currentGraph.graph.tenths[ i ].attr({ fill: 'purple', stroke: '#000' });
}
for ( var i = 0; i < places[0]; ++i ) {
KhanUtil.currentGraph.graph.hundredths[ i ].attr({ fill: 'gray', stroke: '#000' });
}
</div>
<div class="example">click a bill or coin to select it</div>
<div class="example">click a bill or coin again to deselect it</div>
</div>
</div>
</div>
<div class="hints">
<p>
<code>\Large{
<span data-if="THOUSANDS !== 0">\color{<var>PINK</var>}{<var>THOUSANDS</var>}</span>
\color{<var>ORANGE</var>}{<var>HUNDREDS</var>}
\color{<var>GREEN</var>}{<var>TENS</var>}
\color{<var>BLUE</var>}{<var>ONES</var>}.
\color{purple}{<var>TENTHS</var>}
\color{gray}{<var>HUNDREDTHS</var>}
<span data-if="THOUSANDTHS !== 0">\color{brown}{<var>THOUSANDTHS</var>}</span>
}
</code>
is the same as
<code>\large{
<span data-if="THOUSANDS !== 0">\color{<var>PINK</var>}{<var>THOUSANDS</var>000} + </span>
<span data-if="HUNDREDS !== 0">\color{<var>ORANGE</var>}{<var>HUNDREDS</var>00} + </span>
<span data-if="TENS !== 0">\color{<var>GREEN</var>}{<var>TENS</var>0} + </span>
<span data-if="ONES !== 0">\color{<var>BLUE</var>}{<var>ONES</var>} + </span>
<span data-if="TENTHS !== 0">\color{purple}{0.<var>TENTHS</var>} + </span>
<span data-if="HUNDREDTHS !== 0">\color{gray}{0.0<var>HUNDREDTHS</var>}</span>
<span data-if="THOUSANDTHS !== 0"> + \color{brown}{0.00<var>THOUSANDTHS</var>}</span>
}</code>.
</p>
<div data-if="THOUSANDS !== 0">
<p data-if="isSingular(THOUSANDS)">
<code>\large{\color{<var>PINK</var>}{<var>THOUSANDS</var>000}}</code> is the same as <code>\large{\color{<var>PINK</var>}{<var>THOUSANDS</var>}}</code>
thousand, the place value four places to the left of the decimal point.
</p><p data-else="">
<code>\large{\color{<var>PINK</var>}{<var>THOUSANDS</var>000}}</code> is the same as <code>\large{\color{<var>PINK</var>}{<var>THOUSANDS</var>}}</code>
thousands, the place value four places to the left of the decimal point.
</p>
<div class="graphie" data-update="graph">
// Select thousands.
var thous = $( '#problemarea .thou' );
thous.removeClass( 'thou-selected' );
for ( var i = 0; i < THOUSANDS; i++ ) {
$( thous[ i ] ).addClass( 'thou-selected' );
}
</div>
</div>
<p data-else="">
Because there is no number in the <span class="hint_pink">thousands</span> place, you don't need any <span class="hint_pink">thousands</span>.
</p>
<div data-if="HUNDREDS !== 0">
<p data-if="isSingular(HUNDREDS)">
<code>\large{\color{<var>ORANGE</var>}{<var>HUNDREDS</var>00}}</code> is the same as <code>\large{\color{<var>ORANGE</var>}{<var>HUNDREDS</var>}}</code>
hundred, the place value three places to the left of the decimal point.
</p><p data-else="">
<code>\large{\color{<var>ORANGE</var>}{<var>HUNDREDS</var>00}}</code> is the same as <code>\large{\color{<var>ORANGE</var>}{<var>HUNDREDS</var>}}</code>
hundreds, the place value three places to the left of the decimal point.
</p>
<div class="graphie" data-update="graph">
// Select hundreds.
var hunds = $( '#problemarea .hund' );
hunds.removeClass( 'hund-selected' );
for ( var i = 0; i < HUNDREDS; i++ ) {
$( hunds[ i ] ).addClass( 'hund-selected' );
}
</div>
</div>
<p data-else="">
Because the <span class="hint_orange">hundreds</span> place is <code class="hint_orange">\large{0}</code>, you don't need any <span class="hint_orange">hundreds</span>.
</p>
<div data-if="TENS !== 0">
<p data-if="isSingular(TENS)">
<code>\large{\color{<var>GREEN</var>}{<var>TENS</var>0}}</code> is the same as <code>\large{\color{<var>GREEN</var>}{<var>TENS</var>}}</code>
ten, the place value two places to the left of the decimal point.
</p><p data-else="">
<code>\large{\color{<var>GREEN</var>}{<var>TENS</var>0}}</code> is the same as <code>\large{\color{<var>GREEN</var>}{<var>TENS</var>}}</code>
tens, the place value two places to the left of the decimal point.
</p>
<div class="graphie" data-update="graph">
// Select tens.
var tens = $( '#problemarea .ten' );
tens.removeClass( 'ten-selected' );
for ( var i = 0; i < TENS; i++ ) {
$( tens[ i ] ).addClass( 'ten-selected' );
}
</div>
</div>
<p data-else="">
Because the <span class="hint_green">tens</span> place is <code class="hint_green">\large{0}</code>, you don't need any <span class="hint_green">tens</span>.
</p>
<div data-if="ONES !== 0">
<p data-if="isSingular(ONES)">
<code>\large{\color{<var>BLUE</var>}{<var>ONES</var>}}</code> is the same as <code>\large{\color{<var>BLUE</var>}{<var>ONES</var>}}</code>
one, the place value one place to the left of the decimal point.
</p><p data-else="">
<code>\large{\color{<var>BLUE</var>}{<var>ONES</var>}}</code> is the same as <code>\large{\color{<var>BLUE</var>}{<var>ONES</var>}}</code>
ones, the place value one place to the left of the decimal point.
</p>
<div class="graphie" data-update="graph">
// Select ones.
var ones = $( '#problemarea .one' );
ones.removeClass( 'one-selected' );
for ( var i = 0; i < ONES; i++ ) {
$( ones[ i ] ).addClass( 'one-selected' );
}
</div>
</div>
<p data-else="">
Because the <span class="hint_blue">ones</span> place is <code class="hint_blue">\large{0}</code>, you don't need any <span class="hint_blue">ones</span>.
</p>
<div data-if="TENTHS !== 0">
<p data-if="isSingular(TENTHS)">
<code>\large{\color{purple}{0.<var>TENTHS</var>}}</code> is the same as <code>\large{\color{purple}{<var>TENTHS</var>}}</code>
tenth, the place value one place to the right of the decimal point.
</p><p data-else="">
<code>\large{\color{purple}{0.<var>TENTHS</var>}}</code> is the same as <code>\large{\color{purple}{<var>TENTHS</var>}}</code>
tenths, the place value one place to the right of the decimal point.
</p>
<div class="graphie" data-update="graph">
// Select dimes/tenths.
if ( $( '#place-value' ).length === 1 ) {
var tenths = $( '#problemarea .tenth' );
tenths.removeClass( 'tenth-selected' );
for ( var i = 0; i < TENTHS; i++ ) {
$( tenths[ i ] ).addClass( 'tenth-selected' );
}
} else {
var dimes = $( '#problemarea .dime' );
dimes.removeClass( 'dime-selected' );
for ( var i = 0; i < dimes.length; i++ ) {
graph.getCoinCircle( dimes[ i ] ).attr({ fill: '#eee', stroke: '#ddd' });
}
for ( var i = 0; i < TENTHS; i++ ) {
$( dimes[ i ] ).addClass( 'dime-selected' );
graph.getCoinCircle( dimes[ i ] ).attr({ fill: 'purple', stroke: '#000' });
}
}
</div>
</div>
<p data-else="">
Because the <span class="hint_purple">tenths</span> place is <code class="hint_purple">\large{0}</code>, you don't need any <span class="hint_purple">tenths</span>.
</p>
<div data-if="HUNDREDTHS !== 0">
<p data-if="isSingular(HUNDREDTHS)">
<code>\large{\color{gray}{0.0<var>HUNDREDTHS</var>}}</code> is the same as <code>\large{\color{gray}{<var>HUNDREDTHS</var>}}</code>
hundredth, the place value two places to the right of the decimal point.
</p><p data-else="">
<code>\large{\color{gray}{0.0<var>HUNDREDTHS</var>}}</code> is the same as <code>\large{\color{gray}{<var>HUNDREDTHS</var>}}</code>
hundredths, the place value two places to the right of the decimal point.
</p>
<div class="graphie" data-update="graph">
// Select pennies/hundredths.
if ( $( '#place-value' ).length === 1 ) {
var hundths = $( '#problemarea .hundth' );
hundths.removeClass( 'hundth-selected' );
for ( var i = 0; i < HUNDREDTHS; i++ ) {
$( hundths[ i ] ).addClass( 'hundth-selected' );
}
} else {
var pennies = $( '#problemarea .penny' );
pennies.removeClass( 'penny-selected' );
for ( var i = 0; i < pennies.length; i++ ) {
graph.getCoinCircle( pennies[ i ] ).attr({ fill: '#eee', stroke: '#ddd' });
}
for ( var i = 0; i < HUNDREDTHS; i++ ) {
$( pennies[ i ] ).addClass( 'penny-selected' );
graph.getCoinCircle( pennies[ i ] ).attr({ fill: 'gray', stroke: '#000' });
}
}
</div>
</div>
<p data-else="">
Because the <span class="hint_gray">hundreds</span> place is <code class="hint_gray">\large{0}</code>, you don't need any <span class="hint_gray">hundreds</span>.
</p>
<div data-if="THOUSANDTHS !== 0">
<p data-if="isSingular(THOUSANDTHS)">
<code>\large{\color{#a52a2a}{0.00<var>THOUSANDTHS</var>}}</code> is the same as <code>\large{\color{#a52a2a}{<var>THOUSANDTHS</var>}}</code>
thousandth, the place value three places to the right of the decimal point.
</p><p data-else="">
<code>\large{\color{#a52a2a}{0.00<var>THOUSANDTHS</var>}}</code> is the same as <code>\large{\color{#a52a2a}{<var>THOUSANDTHS</var>}}</code>
thousandths, the place value three places to the right of the decimal point.
</p>
<div class="graphie" data-update="graph">
// Select thousandths.
var thouths = $( '#problemarea .thouth' );
thouths.removeClass( 'thouth-selected' );
for ( var i = 0; i < THOUSANDTHS; i++) {
$( thouths[ i ] ).addClass( 'thouth-selected' );
}
</div>
</div>
<!-- no data-else for thousandths since they're only zero if we're dealing with a money problem -->
<p>
<span>Therefore you need:</span>
<span data-if="THOUSANDS !== 0"><span data-if="isSingular(THOUSANDS)" data-unwrap=""><code>\large{\color{<var>PINK</var>}{<var>THOUSANDS</var>}}</code> thousand, </span><span data-else="" data-unwrap=""><code>\large{\color{<var>PINK</var>}{<var>THOUSANDS</var>}}</code> thousands, </span></span>
<span data-if="HUNDREDS !== 0"><span data-if="isSingular(HUNDREDS)" data-unwrap=""><code>\large{\color{<var>ORANGE</var>}{<var>HUNDREDS</var>}}</code> hundred, </span><span data-else="" data-unwrap=""><code>\large{\color{<var>ORANGE</var>}{<var>HUNDREDS</var>}}</code> hundreds, </span></span>
<span data-if="TENS !== 0"><span data-if="isSingular(TENS)" data-unwrap=""><code>\large{\color{<var>GREEN</var>}{<var>TENS</var>}}</code> ten, </span><span data-else="" data-unwrap=""><code>\large{\color{<var>GREEN</var>}{<var>TENS</var>}}</code> tens, </span></span>
<span data-if="ONES !== 0"><span data-if="isSingular(ONES)" data-unwrap=""><code>\large{\color{<var>BLUE</var>}{<var>ONES</var>}}</code> one, </span><span data-else="" data-unwrap=""><code>\large{\color{<var>BLUE</var>}{<var>ONES</var>}}</code> ones, </span></span>
<span data-if="TENTHS !== 0"><span data-if="isSingular(TENTHS)" data-unwrap=""><code>\large{\color{purple}{<var>TENTHS</var>}}</code> tenth, </span><span data-else="" data-unwrap=""><code>\large{\color{purple}{<var>TENTHS</var>}}</code> tenths, </span></span>
<span data-if="THOUSANDTHS === 0" data-unwrap=""><span data-if="isSingular(HUNDREDTHS)" data-unwrap="">
and <code>\large{\color{gray}{<var>HUNDREDTHS</var>}}</code> hundredth.
</span><span data-else="" data-unwrap="">
and <code>\large{\color{gray}{<var>HUNDREDTHS</var>}}</code> hundredths.
</span></span>
<span data-else="" data-unwrap="">
<span data-if="HUNDREDTHS !== 0"><span data-if="isSingular(HUNDREDTHS)" data-unwrap=""><code>\large{\color{gray}{<var>HUNDREDTHS</var>}}</code> hundredth, </span><span data-else="" data-unwrap=""><code>\large{\color{gray}{<var>HUNDREDTHS</var>}}</code> hundredths, </span></span>
<span data-if="isSingular(THOUSANDTHS)">and <code>\large{\color{#a52a2a}{<var>THOUSANDTHS</var>}}</code> thousandth.</span><span data-else="">and <code>\large{\color{#a52a2a}{<var>THOUSANDTHS</var>}}</code> thousandths.</span>
</span>
</p>
</div>
</div>
</body>
</html>