Multiple Choice
Which is an example of the compensation strategy?
A) 63 × 5 = 63 + 63 + 63 + 63 + 63 = 315
B) 27 × 4 = 20 × 4 + 7 × 4 = 80 + 28 = 108
C) 46 × 3 = 46 × 2 (double) + 46 = 92 + 46 = 138
D) 27 × 4 is about 30 (27 + 3) × 4 = 120; then subtract out the extra 3 × 4,so 120 -12 = 108
Correct Answer:
Verified
Correct Answer:
Verified
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