Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 161 · 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. 1.584 − 29 =
2. 2.391 − 86 =
3. 3.437 − 67 =
4. 4.463 − 79 =
5. 5.465 − 67 =
6. 6.61 − 19 =
7. 7.375 − 28 =
8. 8.334 − 97 =
9. 9.59 − 36 =
10. 10.471 − 16 =
11. 11.562 − 38 =
12. 12.599 − 29 =
13. 13.182 − 37 =
14. 14.385 − 29 =
15. 15.360 − 36 =
16. 16.328 − 27 =
17. 17.140 − 69 =
18. 18.271 − 58 =
19. 19.491 − 77 =
20. 20.412 − 16 =
21. 21.167 − 16 =
22. 22.194 − 98 =
23. 23.536 − 17 =
24. 24.548 − 56 =
25. 25.200 − 88 =
26. 26.186 − 68 =
27. 27.430 − 18 =
28. 28.599 − 68 =
29. 29.101 − 79 =
30. 30.549 − 87 =
31. 31.292 − 99 =
32. 32.214 − 29 =
33. 33.417 − 89 =
34. 34.500 − 56 =
35. 35.536 − 36 =
36. 36.167 − 88 =
37. 37.487 − 56 =
38. 38.125 − 57 =
39. 39.55 − 26 =
40. 40.315 − 56 =

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