Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 176 · 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. 1.589 − 58 =
2. 2.157 − 58 =
3. 3.308 − 89 =
4. 4.445 − 39 =
5. 5.491 − 57 =
6. 6.585 − 28 =
7. 7.92 − 88 =
8. 8.485 − 27 =
9. 9.154 − 86 =
10. 10.263 − 47 =
11. 11.185 − 57 =
12. 12.116 − 47 =
13. 13.435 − 46 =
14. 14.474 − 66 =
15. 15.174 − 48 =
16. 16.316 − 29 =
17. 17.186 − 19 =
18. 18.297 − 47 =
19. 19.198 − 96 =
20. 20.385 − 86 =
21. 21.409 − 68 =
22. 22.578 − 18 =
23. 23.182 − 19 =
24. 24.563 − 68 =
25. 25.554 − 68 =
26. 26.460 − 78 =
27. 27.356 − 17 =
28. 28.214 − 36 =
29. 29.122 − 29 =
30. 30.371 − 58 =
31. 31.560 − 78 =
32. 32.334 − 29 =
33. 33.517 − 29 =
34. 34.147 − 76 =
35. 35.194 − 19 =
36. 36.507 − 97 =
37. 37.242 − 97 =
38. 38.275 − 16 =
39. 39.491 − 66 =
40. 40.277 − 28 =

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