Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 52 · 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. 1.391 − 86 =
2. 2.416 − 96 =
3. 3.281 − 27 =
4. 4.75 − 46 =
5. 5.592 − 69 =
6. 6.318 − 18 =
7. 7.375 − 38 =
8. 8.98 − 59 =
9. 9.332 − 97 =
10. 10.448 − 59 =
11. 11.85 − 17 =
12. 12.548 − 79 =
13. 13.382 − 27 =
14. 14.582 − 56 =
15. 15.353 − 57 =
16. 16.408 − 77 =
17. 17.584 − 18 =
18. 18.265 − 99 =
19. 19.212 − 69 =
20. 20.130 − 29 =
21. 21.265 − 97 =
22. 22.555 − 89 =
23. 23.356 − 27 =
24. 24.245 − 89 =
25. 25.361 − 56 =
26. 26.122 − 77 =
27. 27.121 − 17 =
28. 28.370 − 86 =
29. 29.426 − 76 =
30. 30.165 − 86 =
31. 31.301 − 38 =
32. 32.211 − 97 =
33. 33.393 − 69 =
34. 34.168 − 46 =
35. 35.313 − 76 =
36. 36.543 − 28 =
37. 37.230 − 27 =
38. 38.128 − 27 =
39. 39.62 − 47 =
40. 40.219 − 66 =

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