Subtracting 9
Learn with an example
🚀Subtract. 19 – 9 =
- You can count back to find 19 – 9. Start at 19 and count back 9 times.
- You end at 10.
- 19 – 9 = 10
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You can also think about place value to subtract.
19 is 1 ten and 9 ones.
tens ones
1 9
To subtract 9, take away 9 ones.
tens ones
1 0
That leaves 1 ten, or 10.
19 – 9 = 10
🚀Subtract. 13 – 9 =
- You can count on to find 13 – 9. Start at 9. Count on until you reach 13.
- You counted on 4 times.
- 13 – 9 = 4
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You can also use 10 to find 13 – 9.
Start at 13. Subtract 3 to get to 10. Then subtract 6 more. That way, you subtract 9 in all.
You end at 4.
13 – 9 = 4
🚀Subtract. 17 – 9 =
- You can count back to find 17 – 9. Start at 17 and count back 9 times.
- You end at 8.
- 17 – 9 = 8
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You can also use 10 to find 17 – 9.
Start at 17. Subtract 7 to get to 10. Then subtract 2 more. That way, you subtract 9 in all.
You end at 8.
17 – 9 = 8
Let’s practice!
