Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 441 · 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. 1.322 − 66 =
2. 2.376 − 46 =
3. 3.513 − 19 =
4. 4.185 − 39 =
5. 5.374 − 69 =
6. 6.501 − 57 =
7. 7.353 − 77 =
8. 8.141 − 26 =
9. 9.159 − 28 =
10. 10.98 − 87 =
11. 11.469 − 37 =
12. 12.425 − 38 =
13. 13.121 − 26 =
14. 14.65 − 18 =
15. 15.70 − 18 =
16. 16.366 − 37 =
17. 17.234 − 29 =
18. 18.303 − 89 =
19. 19.205 − 37 =
20. 20.198 − 56 =
21. 21.108 − 88 =
22. 22.172 − 77 =
23. 23.302 − 79 =
24. 24.271 − 39 =
25. 25.167 − 99 =
26. 26.536 − 36 =
27. 27.71 − 68 =
28. 28.83 − 77 =
29. 29.217 − 36 =
30. 30.116 − 77 =
31. 31.473 − 46 =
32. 32.524 − 27 =
33. 33.153 − 29 =
34. 34.132 − 57 =
35. 35.401 − 96 =
36. 36.453 − 69 =
37. 37.316 − 59 =
38. 38.318 − 49 =
39. 39.144 − 39 =
40. 40.579 − 59 =

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