8
Chat with our AI personalities
A set of related addition-subtraction or multiplication-division sentences is a fact family.
15 -7 = 8
When you have a negative number after the subtraction sign it turns in to addition. For example +7 - (-7) = 14 and (-7) - 7 = (-14)
addition
The sum is the answer to an addition problem. Example: 7 is the sum in the problem 3+4=7