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4. Complete the following:
a. The commutative property of addition and multiplication:
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b. The associative property of addition and multiplication:
1. (a + b) +
11. ab)
C. The distributive property of multiplication over addition and subtraction:
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d. 0 (zero) is the identity element of addition:
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e. 1 (one) is the identity element of multiplication:
5. Calculate the following and state which property (les) of operations you have used:
Example: 44+ 55 55 - 44 99
a. 51 + (19 + 46)
b. 4(12 + 9) =99​