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Math Vocabulary

Chapter 2

QuestionAnswer
fact family a set of related multiplication and division, or addition and subtraction equations
inverse operations operations that undo each other
round to replace a number with another number that tells about how many or how much
estimate a number close to an exact amount
front-end estimation a method of estimating a sum or difference by using the front digit of the number and substituting zeros for the other digits
compatible numbers numbers that are easy to compute mentally
difference the answer to a subtraction problem
sum the answer to an addition problem
regroup to exchange amounts of equal value to rename a number
Created by: RossCoops3
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