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<!DOCTYPE html>
<html data-require="math math-format">
<head>
    <title>Converting decimals to fractions 1</title>
    <script src="../khan-exercise.js"></script>
</head>

<body>
    <div class="exercise">
    <div class="problems">
        <div id="to-the-tenth">
            <div class="vars">
                <var id="D">randRange( 1, 9 ) / 10</var>
                <var id="T">floor( D * 10 )</var>
            </div>
            <p class="question">Express <code><var>D.toFixed( 1 )</var></code> as a fraction.</p>
            <p class="solution" data-type="rational" data-simplify="optional"><var>D</var></p>
            <div class="hints">
                <p>The number <code><var>T</var></code> is in the tenths place, so we have <var>cardinal( T )</var> tenth<span data-if="T !== 1">s</span>.</p>
                <p><var>Cardinal( T )</var> tenth<span data-if="T !== 1">s</span> can be written as <code><var>fraction( T, 10 )</var></code>.</p>
            </div>
        </div>

        <div id="to-the-hundredth" data-type="to-the-tenth" data-weight="3">
            <div class="vars">
                <var id="D">randRangeExclude(1, 99, [10,20,30,40,50,60,70,80,90]) / 100</var>
                <var id="T">floor( D * 10 )</var>
                <var id="H">floor( ( D * 100 ) % 10 )</var>
            </div>
            <p class="question">Express <code><var>D.toFixed( 2 )</var></code> as a fraction.</p>
            <p class="solution" data-type="rational" data-simplify="optional"><var>D</var></p>
            <div class="hints">
                <p>The number <code><var>T</var></code> is in the tenths place, so we have <var>cardinal( T )</var> tenth<span data-if="T !== 1">s</span>.</p>
                <p><var>Cardinal( T )</var> tenth<span data-if="T !== 1">s</span> can be written as <code><var>fraction( T, 10 )</var></code>.</p>
                <p>The number <code><var>H</var></code> is in the hundredths place, so we have <var>cardinal( H )</var> hundredth<span data-if="H !== 1">s</span>.</p>
                <p><var>Cardinal( H )</var> hundredth<span data-if="H !== 1">s</span> can be written as <code><var>fraction( H, 100 )</var></code>.</p>
                <div>
                    <p>Add the two parts together.</p>
                    <p><code><var>fraction( T, 10 )</var> + <var>fraction( H, 100 )</var></code></p>
                </div>
                <div>
                    <p><code>= <var>fraction( T * 10, 100 )</var> + <var>fraction( H, 100 )</var></code></p>
                    <p><code>= <var>fraction( T * 10 + H, 100 )</var></code></p>
                </div>
            </div>
        </div>
    </div>
    </div>
</body>
</html>
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