Math Topic 8 Review

Front

Estimate the sum of 405 and 385 by rounding to the nearest hundred.

Back

400 + 400 = 800

Front

Use mental math to add 332 and 154. Break 332 into hundreds, tens, and ones.

Back

Break 332 into 300 + 30 + 2. Break 154 into 100 + 50 + 4.

Front

Which number sentence demonstrates the Commutative Property of Addition?

Back

6 + 8 = 8 + 6

Front

What is the Commutative Property of Addition?

Back

The Commutative Property states that changing the order of the addends does not change the sum.

Front

What is rounding?

Back

Rounding is the process of adjusting a number to the nearest specified value, such as the nearest ten or hundred.

Front

How do you round 405 to the nearest hundred?

Back

405 rounds to 400.

Front

How do you round 385 to the nearest hundred?

Back

385 rounds to 400.

Front

What is mental math?

Back

Mental math is performing calculations in your head without using paper or a calculator.

Front

What is an example of breaking apart numbers for addition?

Back

332 can be broken into 300 + 30 + 2.

Front

What is the Associative Property of Addition?

Back

The Associative Property states that the way numbers are grouped does not change their sum.