Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 822 · 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. 1.480 − 56 =
2. 2.595 − 26 =
3. 3.285 − 56 =
4. 4.442 − 39 =
5. 5.557 − 87 =
6. 6.248 − 98 =
7. 7.270 − 39 =
8. 8.418 − 27 =
9. 9.520 − 46 =
10. 10.414 − 99 =
11. 11.460 − 29 =
12. 12.588 − 37 =
13. 13.118 − 49 =
14. 14.339 − 19 =
15. 15.348 − 18 =
16. 16.419 − 28 =
17. 17.311 − 69 =
18. 18.491 − 37 =
19. 19.189 − 38 =
20. 20.166 − 76 =
21. 21.120 − 26 =
22. 22.507 − 49 =
23. 23.238 − 36 =
24. 24.133 − 56 =
25. 25.392 − 18 =
26. 26.176 − 78 =
27. 27.340 − 58 =
28. 28.430 − 56 =
29. 29.224 − 76 =
30. 30.303 − 27 =
31. 31.154 − 68 =
32. 32.475 − 98 =
33. 33.180 − 86 =
34. 34.168 − 48 =
35. 35.375 − 26 =
36. 36.406 − 57 =
37. 37.356 − 56 =
38. 38.555 − 59 =
39. 39.343 − 56 =
40. 40.560 − 19 =

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