Page 2 - 新思维数学活动用书5 样章
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Contents ontents
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Contents
How to use this book 3
Thinking and Working Mathematically 4
1 The number system 6
1.1 Understanding place value 6
1.2 Rounding decimal numbers 11
2 2D shape and pattern 15
2.1 Triangles 15
2.2 Symmetry 22
3 Numbers and sequences 29
3.1 Counting and sequences 29
3.2 Square and triangular numbers 34
3.3 Prime and composite numbers 38
4 Averages 42
4.1 Mode and median 42
5 Addition and subtraction 47
5.1 Addition and subtraction including decimal numbers 47
5.2 Addition and subtraction of positive and negative numbers 52
6 3D shapes 57
6.1 Nets of cubes and drawing 3D shapes 57
7 Fractions, decimals and percentages 64
7.1 Understanding fractions 64
7.2 Percentages, decimals and fractions 68
7.3 Equivalence and comparison 74
8 Probability 79
8.1 Likelihood 79
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