Math - Chapter 1

Front

Commutative Property of Addition

Back

states that when the order of two addends is changed, the sum is the same

Front

difference

Back

the answer to a subtraction problem

Front

regroup

Back

to exchange amounts of equal value to rename a number

Front

round

Back

to replace a number with another number that tells about how many or how much

Front

compatible numbers

Back

numbers that are easy to compute mentally

Front

estimate

Back

to find an answer that is close to an exact amount

Front

sum

Back

the answer to an addition problem