Question

A student solved 84−27 using the following strategy: they added 3 to both numbers before performing subtraction. What would be the best name for this strategy?

a) Reverse Addition
b) Complement Method
c) Adding by Subtraction
d) Adjusted Subtraction

Answer 1

Option D). The best name for the strategy of adding 3 to both numbers before performing subtraction is Adjusted Subtraction. This strategy adjusts the numbers to make the subtraction easier.

Step-by-step explanation:

Adjusted Subtraction is the most appropriate term for the method of adding 3 to both integers before doing the subtraction. In order to facilitate the subtraction, this method modifies the numbers.

In this instance, the student's addition of 3 to 84 and 27 yielded 87 - 30. Subsequently, the pupil completed the subtraction and obtained the result 57. The altered subtraction approach simplified the math, but the learner still obtained the same result as if they had subtracted 27 from 84 straight.