Page 3 - 新思维数学活动用书4 样章
P. 3
Contents
9 Comparing, rounding and dividing 104
9.1 Rounding, ordering and comparing whole numbers 104
9.2 Division of 2-digit numbers 108
10 Collecting and recording data 113
10.1 How to collect and record data 113
11 Fractions and percentages 121
11.1 Equivalence, comparing and ordering fractions 121
11.2 Percentages 127
12 Investigating 3D shapes and nets 134
12.1 The properties of 3D shapes 134
12.2 Nets of 3D shapes 139
13 Addition and subtraction 145
13.1 Adding and subtracting efficiently 145
13.2 Adding and subtracting fractions with the same denominator 150
14 Area and perimeter 155
14.1 Estimating and measuring area and perimeter 155
14.2 Area and perimeter of rectangles 163
15 Special numbers 171
15.1 Ordering and comparing numbers 171
15.2 Working with special numbers 175
15.3 Tests of divisibility 181
16 Data display and interpretation 184
16.1 Displaying and interpreting data 184
17 Multiplication and division 196
17.1 Using an efficient column method for multiplication 196
17.2 Using an efficient method for division 202
18 Position, direction and movement 207
18.1 Position and movement 207
18.2 Reflecting 2D shapes 215
Acknowledgements
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