Adding Decimals (Base-10 Blocks)
Use base-10 blocks to model two numbers. Then combine the blocks to model the sum. Blocks of equal value can be exchanged from one area of the mat to the other to help understand carrying when adding. Four sets of blocks are available to model different place values.
LESSON MATERIALS:
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Student Exploration Sheet
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Exploration Sheet Answer Key
Answer Key for Subscribers Only
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Vocabulary Sheet
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Teacher Guide
LEARNING OBJECTIVES:
- Add whole numbers with regrouping.
- Add decimals with regrouping.
- Add decimals with the same number of digits.
- Add decimals with different numbers of digits.
- Explain what is happening when you "carry" a digit from one column to another during column addition.
VOCABULARY:
- addend, base-10 blocks, base-10 system, decimal, decimal point, sum, whole number
User Recommendations (5):
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Hearing students discuss options as they worked was delightful.
By: Michelle Hanna (Saskatchewan) | Recommended 118 days ago
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I found it very simple and very very useful for the students
By: Mirza Ali | Recommended 275 days ago
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excellent simulation
By: ahmed smaili | Recommended 285 days ago
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This is a great visual for students learning to add decimals.
By: Sherrie Tiitii (Hawaii) | Recommended 325 days ago
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Graphics are great easier reading for lower leveled students.
By: Dena Phelps (Florida) | Recommended 329 days ago
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