Question

Identify the strategy used to solve the following subtraction problem.

• A. Make a ten strategy
• B. Compensation strategy
• C. Decomposition strategy
• D. Composition strategy

Answer 1

The correct option is B Compensation strategy

In the given problem, we have to subtract 9 from 26.
In the solution, we first added 3 to 26 to make it 29 because it is easier to subtract 9 from 29 than 9 from 26. Then, we subtract 9 from 29 to get 20. As we added 3 to 26 earlier, to compensate that we subtract 3 from 20 to get, 17 as the answer. So, 26 – 9 = 17.
Therefore, we can conclude that the compensation strategy is used here.

Hence, Option D is correct.