Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 137 · 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. 1.298 − 58 =
2. 2.392 − 58 =
3. 3.445 − 27 =
4. 4.108 − 89 =
5. 5.559 − 17 =
6. 6.486 − 96 =
7. 7.275 − 16 =
8. 8.265 − 49 =
9. 9.52 − 16 =
10. 10.241 − 98 =
11. 11.313 − 56 =
12. 12.118 − 58 =
13. 13.564 − 66 =
14. 14.328 − 48 =
15. 15.483 − 59 =
16. 16.295 − 38 =
17. 17.409 − 47 =
18. 18.522 − 99 =
19. 19.430 − 26 =
20. 20.461 − 26 =
21. 21.507 − 39 =
22. 22.182 − 88 =
23. 23.161 − 77 =
24. 24.313 − 57 =
25. 25.510 − 96 =
26. 26.243 − 87 =
27. 27.84 − 19 =
28. 28.492 − 49 =
29. 29.354 − 59 =
30. 30.382 − 49 =
31. 31.186 − 48 =
32. 32.526 − 58 =
33. 33.479 − 59 =
34. 34.447 − 38 =
35. 35.395 − 18 =
36. 36.442 − 76 =
37. 37.424 − 89 =
38. 38.147 − 99 =
39. 39.213 − 86 =
40. 40.258 − 49 =

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