# 9. Use number cubes to compare three-digit numbers (FP)

teaches Common Core State Standards CCSS.Math.Content.2.NBT.A.4 http://corestandards.org/Math/Content/2/NBT/A/4
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2

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Lesson objective: Compare numbers within 1000 using < , >, and = .

This lesson helps to build fluency with comparing numbers within 1000. A place value chart is used here because it helps to build an understanding of place value at an abstract level. This work develops students' understanding that in a three-digit number, the hundreds place has the greatest value. That is why we look at the hundreds place first when comparing two numbers.

Students engage in Mathematical Practice 2 (Reason abstractly and quantitatively) as they compare numbers and explain their reasoning.

Key vocabulary:

• compare
• equal/equivalent
• greater
• hundreds
• less
• ones
• tens
• value

Special materials needed:

• dice/number cubes
• place value mats
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