Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 584 · 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. 1.458 − 17 =
2. 2.374 − 77 =
3. 3.460 − 76 =
4. 4.148 − 16 =
5. 5.242 − 96 =
6. 6.484 − 16 =
7. 7.71 − 39 =
8. 8.160 − 57 =
9. 9.423 − 56 =
10. 10.177 − 88 =
11. 11.204 − 57 =
12. 12.431 − 47 =
13. 13.109 − 97 =
14. 14.452 − 16 =
15. 15.522 − 69 =
16. 16.495 − 68 =
17. 17.172 − 78 =
18. 18.463 − 49 =
19. 19.250 − 87 =
20. 20.222 − 36 =
21. 21.495 − 48 =
22. 22.472 − 87 =
23. 23.381 − 58 =
24. 24.156 − 79 =
25. 25.251 − 19 =
26. 26.333 − 27 =
27. 27.588 − 89 =
28. 28.366 − 49 =
29. 29.212 − 56 =
30. 30.53 − 48 =
31. 31.450 − 17 =
32. 32.495 − 99 =
33. 33.186 − 96 =
34. 34.362 − 38 =
35. 35.121 − 97 =
36. 36.477 − 38 =
37. 37.561 − 59 =
38. 38.263 − 78 =
39. 39.560 − 79 =
40. 40.244 − 48 =

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