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count by tens, make 100 hop
Make 100 Hop

Adding Rounded Numbers

Grade 3

Created by:

Math & Movement

Estimated Activity Time:

Standard:

Concept(s):

Activity Instructions

Write a three-digit division problem on the board. Ask the class to round the two numbers to the nearest 100 before adding them (see rounding activity above). Once the two addends have been rounded to the nearest 100, have a student add the two numbers using the mat to find the sum.

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