Learners need to know the properties of numbers and the properties of operations on numbers. Several properties are important here:
• The commutative property of numbers for addition and multiplication.
• The associative property of numbers for addition and multiplication.
• The distributive property of numbers for multiplication over addition.
• Commutative property Example: 4 p + 6 = 6 + 4 p
Do the following: 5 + 3 q = Example: 2 r × 3 s = 3 s × 2 r Do the following: 4 t × 6 =
• Associative property Example: (5 + 4 p) + (6 + 2 p) = (4 p + p 2 )+ (5 + 6)
Do the following: (4 q+ 5) + (3 q + 7) =
Example:
(5 r × 2 r) × ( 3 s × 4 s)
= (5 r × 3 s) × (2 r × 4 s) Do the following:
(4s×6)×(5×3s)=
1. 5+3q=3q+5
2. 4t*6=6*4t
3. (4q+5)+(3q+7)=(5+7)+(4q+q 3)
4. (4s*6)*(5*3s)=(4s*5)*(6*3s)
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