Name the property that each

example illustrates.

15. (12 + 3) + 32 = 12 + (3 + 32)

16. 14 (1/14) = 1

17. 27 + 0 = 27

18. 11 (4y - 9) = 44y - 99

(12 + 3) + 32 = 12 + (3 + 32)

Associative property of addition: if you have to sum three or more terms, you can group them as you like.

14 (1/14) = 1

Multiplicative inverse: a number multiplied by its inverse is 1

27 + 0 = 27

Identity element of addition. If you sum any number with zero, the result is the number you started with.

11 (4y - 9) = 44y - 99

Distributive property of addition: if you have to multiply a whole sum/subtraction by a number, it is the same as multiplying each term in the sum/subtraction by that number.