Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 350 · 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. 1.159 − 37 =
2. 2.235 − 87 =
3. 3.260 − 49 =
4. 4.154 − 56 =
5. 5.359 − 79 =
6. 6.447 − 38 =
7. 7.206 − 19 =
8. 8.544 − 78 =
9. 9.466 − 76 =
10. 10.198 − 57 =
11. 11.123 − 28 =
12. 12.100 − 88 =
13. 13.224 − 58 =
14. 14.193 − 98 =
15. 15.451 − 89 =
16. 16.369 − 88 =
17. 17.371 − 97 =
18. 18.546 − 19 =
19. 19.154 − 36 =
20. 20.285 − 46 =
21. 21.198 − 77 =
22. 22.291 − 76 =
23. 23.300 − 57 =
24. 24.551 − 29 =
25. 25.161 − 78 =
26. 26.102 − 19 =
27. 27.560 − 98 =
28. 28.464 − 77 =
29. 29.466 − 79 =
30. 30.538 − 98 =
31. 31.339 − 88 =
32. 32.594 − 46 =
33. 33.185 − 87 =
34. 34.73 − 39 =
35. 35.494 − 86 =
36. 36.357 − 49 =
37. 37.118 − 79 =
38. 38.599 − 16 =
39. 39.206 − 28 =
40. 40.217 − 69 =

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