# Khan/khan-exercises

### Subversion checkout URL

You can clone with
or
.
Older
100644 122 lines (114 sloc) 4.571 kB
 a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 1 4c19def graphie for comparing_fractions_1 spicyj authored Jul 14, 2011 2 a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 3 72418b8 Add meta charset to all HTML pages. jeresig authored Jul 28, 2011 4 07d95d3 Rename EVERYTHING; closes #323. spicyj authored Jul 22, 2011 5 Comparing fractions 1 a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 6 7 8 6371709 Whitespace cleanup! spicyj authored Jun 21, 2011 9 13
14
15
16
17 randRange( 1, 14 ) 18 randRange( NUM_1 + 1, 15 ) 6371709 Whitespace cleanup! spicyj authored Jun 21, 2011 19 a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 20 NUM_1 21 randRange( NUM_2 + 1, 15 ) 22 23 (function() { 24 if ( DEN_1 < DEN_2 ) { 25 return ">"; 26 } else { 27 return "<"; 28 } 29 })() 30 DEN_1 > DEN_2 ? "more" : "fewer" 31 DEN_1 > DEN_2 ? "smaller" : "bigger" 32 DEN_1 > DEN_2 ? "less" : "more" 33 SMALLER === "smaller" ? "bigger" : "smaller" 34
6371709 Whitespace cleanup! spicyj authored Jun 21, 2011 35 a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 36
37

Fill in the blank.

38

39 \dfrac{NUM_1}{DEN_1} f8b090e Small spacing correction in comparing_fractions_1.html jpulgarin authored Aug 16, 2011 40 ____ \dfrac{NUM_2}{DEN_2} a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 41

42
d22b693 TeX the <, >, = in inequality exercises spicyj authored Aug 23, 2011 43

SOLUTION

a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 44
d22b693 TeX the <, >, = in inequality exercises spicyj authored Aug 23, 2011 45
• <
• 46
• >
• a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 47
48
ababc88 Add a pie to comparing fractions marcia authored Jun 13, 2011 49
50

This is like comparing two equally sized pizzas where one is cut into DEN_1 equal slices and the other is cut into DEN_2 equal slices.

4c19def graphie for comparing_fractions_1 spicyj authored Jul 15, 2011 51
52
53 init({ range: [ [-3, 3], [-3, 3] ], scale: 25 }); 54 piechart( [NUM_1, DEN_1 - NUM_1], ["#e00", "#999"], 2 ); 1d5ae91 Two graph divs instead of one marcia authored Jun 13, 2011 55
4c19def graphie for comparing_fractions_1 spicyj authored Jul 15, 2011 56
57 init({ range: [ [-3, 3], [-3, 3] ], scale: 25 }); 58 piechart( [NUM_2, DEN_2 - NUM_2], ["#e00", "#999"], 2 ); 1d5ae91 Two graph divs instead of one marcia authored Jun 13, 2011 59
ababc88 Add a pie to comparing fractions marcia authored Jun 13, 2011 60
61
a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 62

Note that cutting a pizza into more slices will result in smaller slices.

63

The left fraction represents a pizza with MORE slices, and so each slice is SMALLER.

1d5ae91 Two graph divs instead of one marcia authored Jun 13, 2011 64

NUM_1 SMALLER sliceplural( NUM_1 ) is LESS pizza than NUM_2 BIGGER sliceplural( NUM_2 ).

f1c3306 Make MathJax pretty! (fix #212) spicyj authored Jul 26, 2011 65

So, \dfrac{NUM_1}{DEN_1} SOLUTION \dfrac{NUM_2}{DEN_2}.

a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 66
67
6371709 Whitespace cleanup! spicyj authored Jun 21, 2011 68 a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 69
70
71 randRange( 1, 14 ) 72 randRange( NUM_1 + 1, 15 ) 6371709 Whitespace cleanup! spicyj authored Jun 21, 2011 73 a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 74 DEN_1 75 randRange( 1, DEN_2 - 1 ) 76 77 (function() { 78 if ( NUM_1 < NUM_2 ) { 79 return "<"; 80 } else { 81 return ">"; 82 } 83 })() 84 NUM_1 < NUM_2 ? "less" : "more" 85
6371709 Whitespace cleanup! spicyj authored Jun 21, 2011 86 a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 87
88

Fill in the blank.

89

90 \dfrac{NUM_1}{DEN_1} 9fd2d13 Corrected spacing in comparing fractions exercises and removed .gitig… jpulgarin authored Aug 15, 2011 91 ____ \dfrac{NUM_2}{DEN_2} a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 92

93
d22b693 TeX the <, >, = in inequality exercises spicyj authored Aug 23, 2011 94

SOLUTION

a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 95
d22b693 TeX the <, >, = in inequality exercises spicyj authored Aug 23, 2011 96
• <
• 97
• >
• a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 98
99
ababc88 Add a pie to comparing fractions marcia authored Jun 13, 2011 100
101

This is like considering two equally sized pizzas that have been cut into DEN_1 equal slices.

d89d39c Fix errors with spelling and grammar. Also changed the test mode con… rhc2104 authored Jul 27, 2011 102

Since both pizzas have the same number of slices, all the slices are the same size.

4c19def graphie for comparing_fractions_1 spicyj authored Jul 15, 2011 103
104
105 init({ range: [ [-3, 3], [-3, 3] ], scale: 25 }); 106 piechart( [NUM_1, DEN_1 - NUM_1], ["#e00", "#999"], 2 ); 1d5ae91 Two graph divs instead of one marcia authored Jun 13, 2011 107
4c19def graphie for comparing_fractions_1 spicyj authored Jul 15, 2011 108
109 init({ range: [ [-3, 3], [-3, 3] ], scale: 25 }); 110 piechart( [NUM_2, DEN_2 - NUM_2], ["#e00", "#999"], 2 ); 1d5ae91 Two graph divs instead of one marcia authored Jun 13, 2011 111
6371709 Whitespace cleanup! spicyj authored Jun 21, 2011 112
ababc88 Add a pie to comparing fractions marcia authored Jun 13, 2011 113
1d5ae91 Two graph divs instead of one marcia authored Jun 13, 2011 114

plural( NUM_1, "slice" ) is LESS pizza than plural( NUM_2, "slice" ).

f1c3306 Make MathJax pretty! (fix #212) spicyj authored Jul 27, 2011 115

So, \dfrac{NUM_1}{DEN_1} SOLUTION \dfrac{NUM_2}{DEN_2}.

a0106e4 Add exercise -- comparing fractions 1 marcia authored Jun 6, 2011 116
117
118
119
120 6371709 Whitespace cleanup! spicyj authored Jun 21, 2011 121
Something went wrong with that request. Please try again.