CONTENTS

• Measuring lenght 4
• Multiplication between 1–1000 8
• How the products change 14
• Estimating the product 15
• Doing multiplication on paper 16
• The order of operations 24
• Practice 26
• Division with numbers 1–1000 28
• How the quotients change 36
• Fractions 38
• Negative numbers 42
• Practice 46
• Geometry 50
• Measuring mass 58
• Measuring volume 63
• Combinatorics 66
• Experiments with probability 69
• End-of-year recap 72