Adding and Subtracting Decimals with Models
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Objective
I can use models to add and subtract decimals.
Part 1 of 3
Warm-up video
Unknown Channel · 5:00
We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 3
Practice
7 questions
Explain why it is important to line up the decimals when adding or subtracting decimal numbers.
Describe how placeholder zeros can be used when adding or subtracting decimals. Give an example.
Part 3 of 3
Exit ticket
Quick comprehension check
“Calculate 32.45 + 17.9. Show your work, lining up the decimals. Calculate 15 - 6.72. Show your work, lining up the decimals and using placeholder zeros. ”
Sample answer included in the free materials
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Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
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