Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 829 · 40 questions

The fast method (Shift both): How much makes the second number round? 68 needs 2 to make 70. Add that amount to BOTH numbers. Take away the round number.

1. 1.196 − 16 =
2. 2.295 − 39 =
3. 3.365 − 69 =
4. 4.197 − 78 =
5. 5.585 − 29 =
6. 6.467 − 99 =
7. 7.375 − 89 =
8. 8.552 − 47 =
9. 9.222 − 29 =
10. 10.119 − 96 =
11. 11.133 − 97 =
12. 12.338 − 46 =
13. 13.528 − 89 =
14. 14.472 − 27 =
15. 15.530 − 96 =
16. 16.147 − 67 =
17. 17.596 − 98 =
18. 18.516 − 39 =
19. 19.432 − 19 =
20. 20.534 − 46 =
21. 21.234 − 18 =
22. 22.152 − 29 =
23. 23.424 − 29 =
24. 24.238 − 99 =
25. 25.377 − 57 =
26. 26.598 − 18 =
27. 27.582 − 77 =
28. 28.257 − 29 =
29. 29.313 − 26 =
30. 30.586 − 17 =
31. 31.225 − 98 =
32. 32.124 − 78 =
33. 33.431 − 18 =
34. 34.167 − 78 =
35. 35.445 − 99 =
36. 36.572 − 46 =
37. 37.410 − 18 =
38. 38.485 − 67 =
39. 39.568 − 26 =
40. 40.126 − 66 =

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