Page 2 - 新思维数学活动用书6 样章
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Contents
C
ontents
Contents
How to use this book 3
Thinking and Working Mathematically 4
1 The number system 6
1.1 Place value 6
1.2 Rounding decimal numbers 12
2 Numbers and sequences 18
2.1 Counting and sequences 18
2.2 Special numbers 24
2.3 Common multiples and factors 29
3 Averages 34
3.1 Mode, median, mean and range 34
4 Addition and subtraction (1) 41
4.1 Positive and negative integers 41
4.2 Using letters to represent numbers 47
5 2D shapes 53
5.1 Quadrilaterals 53
5.2 Circles 59
5.3 Rotational symmetry 68
6 Fractions and percentages 74
6.1 Understanding fractions 74
6.2 Percentages 79
6.3 Equivalence and comparison 84
7 Exploring measures 88
7.1 Rectangles and triangles 88
7.2 Time 94
8 Addition and subtraction (2) 102
8.1 Adding and subtracting decimal numbers 102
8.2 Adding and subtracting fractions 108
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