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Place Value Monsters

By Platform Administrator · Submitted Sep 30, 2026

Content Area
Mathematics
Grade
2

Students "build" a monster out of base ten blocks. They then find and prove the value of their monster. They will have to remove certain "parts" of the monster to show an understanding of subtraction from the original value.

MA Standards

2.NBT.B.7
Add and subtract within 1,000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
2.NBT.B.9
Explain why addition and subtraction strategies work, using place value and the properties of operations. [Note: Explanations may be supported by drawings or objects.]

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