Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 508 · 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. 1.535 − 59 =
2. 2.121 − 76 =
3. 3.508 − 28 =
4. 4.450 − 59 =
5. 5.158 − 78 =
6. 6.531 − 16 =
7. 7.178 − 88 =
8. 8.193 − 86 =
9. 9.120 − 99 =
10. 10.389 − 47 =
11. 11.158 − 67 =
12. 12.56 − 48 =
13. 13.229 − 39 =
14. 14.277 − 59 =
15. 15.108 − 68 =
16. 16.237 − 16 =
17. 17.586 − 26 =
18. 18.559 − 37 =
19. 19.249 − 26 =
20. 20.522 − 56 =
21. 21.356 − 18 =
22. 22.518 − 67 =
23. 23.390 − 36 =
24. 24.300 − 89 =
25. 25.261 − 68 =
26. 26.554 − 97 =
27. 27.502 − 16 =
28. 28.517 − 18 =
29. 29.313 − 27 =
30. 30.524 − 27 =
31. 31.107 − 86 =
32. 32.367 − 19 =
33. 33.476 − 38 =
34. 34.436 − 49 =
35. 35.137 − 89 =
36. 36.482 − 66 =
37. 37.299 − 29 =
38. 38.231 − 98 =
39. 39.273 − 69 =
40. 40.171 − 86 =

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