Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 255 · 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. 1.566 − 56 =
2. 2.407 − 26 =
3. 3.538 − 38 =
4. 4.358 − 26 =
5. 5.333 − 19 =
6. 6.472 − 77 =
7. 7.506 − 59 =
8. 8.437 − 88 =
9. 9.451 − 28 =
10. 10.196 − 27 =
11. 11.67 − 29 =
12. 12.175 − 37 =
13. 13.470 − 98 =
14. 14.318 − 99 =
15. 15.305 − 48 =
16. 16.223 − 68 =
17. 17.143 − 26 =
18. 18.511 − 79 =
19. 19.178 − 96 =
20. 20.512 − 18 =
21. 21.126 − 58 =
22. 22.466 − 36 =
23. 23.416 − 96 =
24. 24.150 − 49 =
25. 25.205 − 98 =
26. 26.100 − 29 =
27. 27.323 − 76 =
28. 28.540 − 56 =
29. 29.296 − 28 =
30. 30.436 − 88 =
31. 31.322 − 89 =
32. 32.596 − 46 =
33. 33.127 − 19 =
34. 34.106 − 77 =
35. 35.313 − 79 =
36. 36.143 − 96 =
37. 37.543 − 29 =
38. 38.182 − 47 =
39. 39.162 − 16 =
40. 40.187 − 96 =

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