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<!DOCTYPE html>
<html data-require="math graphie graphie-helpers-arithmetic">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Subtraction 2</title>
<script src="../khan-exercise.js"></script>
</head>
<body>
<div class="exercise">
<div class="vars">
<var id="A_100">randRange( 1, 9 )</var>
<var id="A_10">randRange( 1, 9 )</var>
<var id="A_1">randRange( 2, 9 )</var>
<var id="A">100 * A_100 + 10 * A_10 + A_1</var>
<var id="B_100">randRange( 0, A_100 - 1 )</var>
<var id="B_10">randRange( 0, A_10 - 1 )</var>
<var id="B_1">randRange( 0, A_1 - 1 )</var>
<var id="B">100 * B_100 + 10 * B_10 + B_1</var>
<var id="DUMMY">[]</var>
</div>
<div class="problems">
<div>
<div class="graphie" id="numbers">
graph.subtractor = new Subtractor( A, B );
graph.subtractor.show();
DUMMY = Array( graph.subtractor.getNumHints() );
</div>
<div class="solution" data-forms="integer"><var>A - B</var></div>
</div>
</div>
<div class="hints">
<div class="graphie" data-update="numbers" data-each="DUMMY as dummy">
graph.subtractor.showHint();
</div>
</div>
</div>
</body>
</html>
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