Adding and Subtracting Doubles to 20
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Objective
I can add and subtract pairs of numbers to find doubles that total 20.
Part 1 of 4
Warm-up video
HarperKids · 6:51
We don't generate video — this one is by HarperKids 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 4
Key concepts
3 concepts
- 1
When you subtract, you end up with less than what you started with.
- 2
Four buttons minus two buttons is two buttons. 4 - 2 = 2.
- 3
Five guitars minus two guitars is three guitars. 5 - 2 = 3.
Part 3 of 4
Practice
3 questions
Gus has 4 drumsticks and drops 2. How many drumsticks does Gus have left?
Callie has 6 bananas and gives away 5. How many bananas does Callie have left?
Part 4 of 4
Exit ticket
Quick comprehension check
“What two identical numbers can you add together to get 20?”
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
Student Handout
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