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Estimation

hundred number grid 0-99 chart
Add/Subtract

Estimation

Grade 3, Grade 4

Created by:

Math & Movement

Estimated Activity Time:

Standard:

Operations and Algebraic Thinking

Concept(s):

Estimation

Activity Instructions

Materials(s): Count to 10 Mat, Add/Subtract Mat

Using the Count to 10 Mat and the Add/Subtract Nat, give students addition questions to answer, first by estimating (Count to 10) and then exact (Add/Subtract).

For example, ask, “What is 31 + 68”. First, they round both to the closest 10 and add getting 100. Then ask them to figure out the problem exactly by hopping on the Add/Subtract mat.

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