1. Math Chapter 10 2-Digit Subtraction

2. Regroup if you need to. 36 19 71 - 216

3. Regroup if you need to. 23 7 61 - 113

4. Regroup if you need to. 72 27 54 - 612

5. Regroup if you need to. 24 18 6 - 114

6. Regroup if you need to. 96 37 95 - 816

7. Use a number line to round each number to the nearest ten. Estimate the difference. 37 24 - - 30 20 3 10 1

8. Use a number line to round each number to the nearest ten. Estimate the difference. 94 73 - - 90 70 1 20 2

9. Use a number line to round each number to the nearest ten. Estimate the difference. 57 11 - - 60 10 6 50 4

10. Use a number line to round each number to the nearest ten. Estimate the difference. 41 31 - - 40 30 0 10 1

11. Use a number line to round each number to the nearest ten. Estimate the difference. 67 35 - - 70 40 2 30 3

12. Subtract. Add to check 31 17 - +

13. 54 29 - +

14. 63 59 - +

15. 75 29 - +

16. 91 52 - +