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In this worksheet you will learn to round numbers to the nearest hundred to estimate the answer to an addition.

 

Example

Estimate the answer to the addition by first rounding both numbers to the nearest hundred.

Remember when rounding to the nearest hundred, look at the tens place. If the number in the tens place is less than 5, round down! If the number in the tens place is 5 or more, round up!

543 + 781

A

 + 

B

 = 

C

 

Answer

543 rounds to 500.

781 rounds to 800.

When we add 500 + 800 = 1300

543 + 781

500

 + 

800

 = 

1300

10 questions