Question

Which expression would be easier to simplify if you used the commutative property to change the order of numbers?


A. (-17)+45+(-33)

B. 20+17+(-1/2)+(-5/2)

C. 2/3+(-1/3)+5

D. 20+80+(-32)

Answer 1

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Option C is the correct answer.

The order seems appropriate for A, B, D:

• A. 37-6/2 = 34
• B. 1/3 +5 = 5 1/3
• D. 100 - 32 = 68

I would rearrange the numbers in C to put the negative numbers together:

C. (-17) +(-33) +45 = 50 +45 = -5