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

Question

Quizplus · Accepted Answer

The compensation strategy involves adjusting one number in a problem to make it easier to solve mentally. In this case, adding 3 to 27 to make it 30 makes it easier to multiply by 4. Then, subtracting out the extra 3 × 4 gives the correct answer of 108.

Which Is an Example of the Compensation Strategy