Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 234 · 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. 1.529 − 88 =
2. 2.411 − 58 =
3. 3.153 − 69 =
4. 4.422 − 48 =
5. 5.325 − 39 =
6. 6.107 − 16 =
7. 7.476 − 27 =
8. 8.393 − 16 =
9. 9.499 − 28 =
10. 10.93 − 26 =
11. 11.403 − 76 =
12. 12.241 − 26 =
13. 13.169 − 96 =
14. 14.198 − 28 =
15. 15.596 − 18 =
16. 16.501 − 26 =
17. 17.217 − 38 =
18. 18.431 − 18 =
19. 19.196 − 96 =
20. 20.322 − 17 =
21. 21.250 − 46 =
22. 22.470 − 18 =
23. 23.464 − 19 =
24. 24.55 − 38 =
25. 25.508 − 16 =
26. 26.509 − 99 =
27. 27.243 − 56 =
28. 28.566 − 47 =
29. 29.539 − 57 =
30. 30.93 − 38 =
31. 31.191 − 37 =
32. 32.202 − 39 =
33. 33.489 − 78 =
34. 34.441 − 17 =
35. 35.390 − 68 =
36. 36.118 − 87 =
37. 37.568 − 87 =
38. 38.521 − 76 =
39. 39.539 − 88 =
40. 40.155 − 89 =

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