Page 30 - SPARK OF MATH book(2)

Subtracting numbers with regrouping.

7 1 1 ten = 10 ones

- 2 8
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First, subtract the ones Then, subtract the tens

⁶ ¹ ¹ Regroup 71 ⁶ ¹ ¹

7 1 7 1
71 = 70 +1
- 2 8 - 2 8
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= 60 + 11
3 4 3
then, 11- 8=3

Find the answer.

5 15
6 5 1 6 9 2
- 5 7 - 0 8 - 4 5
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0 8

8 3 5 9 6 5

- 1 0 - 3 7 - 5 9
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