∑ DANEMATHICS
FREE CAPS MATHS RESOURCES
Grade 8 · Whole Numbers
Properties of Whole Numbers
MEMORANDUM
Name:
Class:
Date:
Mark
/ 12
Answer all questions. Show all your working — marks are awarded for method as well as the final answer. Teacher copy: accept any correct equivalent method.
- 1Name the property shown: 7 × 5 = 5 × 7(2)Commutative property of multiplication (the order was swapped).✓✓ (2)
- 2Name the property shown: (2 + 9) + 1 = 2 + (9 + 1)(2)Associative property of addition (the grouping changed).✓✓ (2)
- 3Use the distributive property to work out 7 × 98 without a calculator.(2)7 × (100 − 2) = 700 − 14 = 686✓✓ (2)
- 4Use the distributive property to work out 8 × 53.(2)8 × (50 + 3) = 400 + 24 = 424✓✓ (2)
- 5Fill in the missing numbers: 46 + ___ = 46 and 46 × ___ = 46(2)0 (additive identity) and 1 (multiplicative identity).✓✓ (2)
- 6What is 0 ÷ 8, and what is 8 ÷ 0?(2)0 ÷ 8 = 0; 8 ÷ 0 is undefined.✓✓ (2)
TOTAL: 12 marks