# 2. Use the race to 600 game to practice counting by hundreds (FP)

teaches Common Core State Standards CCSS.Math.Content.2.NBT.A.1a http://corestandards.org/Math/Content/2/NBT/A/1/a
teaches Common Core State Standards CCSS.Math.Content.2.NBT.A.1b http://corestandards.org/Math/Content/2/NBT/A/1/b
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4

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Lesson objective: Use place value representations to show that ten tens can be thought of as a hundred.

This lesson helps to build fluency with place value concepts. Base ten blocks are used here because repeatedly building a hundred using tens helps to soldify the concept. This work develops students' understanding that ten tens can be thought of as a hundred.

Students engage in Mathematical Practice 4 (Model with mathematics) as they compose 100 by adding groups of ten.

Key vocabulary:

• equivalent
• group
• hundreds
• ten

Special materials needed:

• base ten blocks
• dice
• place value chart
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