Math Topic 2 Vocabulary

Front

What is the method called when you modify one number and adjust another to simplify computation?

Back

Compensation

Front

You can replace the values in a problem with ____________ so that it's easier to use mental math to complete the computation.

Back

compatible numbers

Front

To align decimal points in a decimal addition problem, annex zeros to write _____________ so that all addends have the same number of decimal places.

Back

equivalent decimals

Front

When you add or multiply numbers, it doesn't matter how you group them together (using parentheses), the answer will always be the same.
477.75 + (76.89 + 196.25) = (76.89 + 196.25) + 477.75

Back

Associative Property

Front

The order of numbers in an addition or multiplication problem can be changed without changing the answer.

23.5 + 41.3 = 41.3 + 23.5

Back

commutative property of addition

Front

Opposite operations that undo each other.

(+, -) (×, ÷)

Back

inverse operations