Answer
Addition to subtraction:
100 + 200 = 300 can be changed into 300 - 200 = 100.
123 + 456 = 579 can be changed into 579 - 456 = 123.
Subtraction to addition:
1000 - 300 = 700 can be changed into 300 + 700 = 1000.
876 - 345 = 531 can be changed into 345 + 531 = 876.
Work Step by Step
Any addition problem can also be shown as a subtraction problem and vice versa.