Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 351 · 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. 1.585 − 39 =
2. 2.63 − 56 =
3. 3.417 − 28 =
4. 4.225 − 38 =
5. 5.190 − 27 =
6. 6.418 − 76 =
7. 7.251 − 67 =
8. 8.134 − 36 =
9. 9.112 − 48 =
10. 10.174 − 77 =
11. 11.532 − 19 =
12. 12.470 − 46 =
13. 13.284 − 27 =
14. 14.372 − 66 =
15. 15.201 − 18 =
16. 16.290 − 17 =
17. 17.71 − 56 =
18. 18.532 − 39 =
19. 19.269 − 29 =
20. 20.439 − 88 =
21. 21.546 − 56 =
22. 22.266 − 38 =
23. 23.138 − 39 =
24. 24.199 − 88 =
25. 25.511 − 87 =
26. 26.472 − 76 =
27. 27.336 − 77 =
28. 28.298 − 47 =
29. 29.398 − 37 =
30. 30.535 − 16 =
31. 31.227 − 28 =
32. 32.293 − 67 =
33. 33.370 − 96 =
34. 34.567 − 87 =
35. 35.149 − 66 =
36. 36.389 − 67 =
37. 37.410 − 19 =
38. 38.541 − 58 =
39. 39.55 − 17 =
40. 40.464 − 56 =

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