Subtracting 8
Learn with an example
✈️Subtract. 9 – 8 =
- You can count on to find 9–8. Start at 8. Count on until you reach 9.
- You counted on 1 time.
- 9 – 8 = 1
✈️Subtract. 11 – 8 =
- You can count on to find 11 – 8. Start at 8. Count on until you reach 11.
- You counted on 3 times.
- 11 – 8 = 3
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- You can also use 10 to find 11 – 8.
- Start at 11. Subtract 1 to get to 10. Then subtract 7 more. That way, you subtract 8 in all.
- You end at 3.
- 11 – 8 = 3
✈️Subtract. 15 – 8 =
- You can count back to find 15 – 8. Start at 15 and count back 8 times.
- You end at 7.
- 15 – 8 = 7
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- You can also use 10 to find 15 – 8.
- Start at 15. Subtract 5 to get to 10. Then subtract 3 more. That way, you subtract 8 in all.
- You end at 7.
- 15 – 8 = 7
Let’s practice!
