Counting Backward by Tens
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Objective
I can extend a number sequence by counting backward by 10s.
Part 1 of 4
Warm-up video
Mr. R.'s Songs for Teaching · 4:50
We don't generate video — this one is by Mr. R.'s Songs for Teaching 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
Count Back Cat always counts back and never counts up, which means she subtracts from a starting number.
- 2
To help Count Back Cat, we practiced counting back by tens starting from 100 until we reached 0 dollars.
- 3
When counting back by tens from 100, the number sequence continues as 100, 90, 80, 70, 60, 50, and so on.
Part 3 of 4
Practice
10 questions
What are the next three numbers in the sequence: 160, 150, 140, ___, ___, ___?
Fill in the missing number in the sequence: 430, 420, ___, 400, 390.
Part 4 of 4
Exit ticket
Quick comprehension check
“Extend the following number sequence by counting backward by 10s for the next four numbers: 130, 120, ___, ___, ___, ___”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
Printable worksheet
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