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Order of Operations and Expression Evaluation
Worksheet
Grade Level
Algebra I
ALG1.2 Order of Operations and Expression Evaluation
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A student evaluated 80 - 3{12 - 2³} and got 50. Which check best shows whether 50 is reasonable?
A
Round 80 to 100: 100 − 3×12 ≈ 64, so 50 is reasonable.
B
Compute 12 − 2³ = 4, so 80 − 3×4 = 50.
C
Compute 2³ = 6, then 12 − 6 = 6, and 80 − 3×6 = 62.
D
Compute 2³ = 8, so 12 − 8 = 4; 3×4 = 12; 80 − 12 = 68, not 50.
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