Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 973 · 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. 1.469 − 58 =
2. 2.302 − 47 =
3. 3.513 − 18 =
4. 4.293 − 66 =
5. 5.93 − 29 =
6. 6.160 − 29 =
7. 7.249 − 28 =
8. 8.66 − 59 =
9. 9.115 − 16 =
10. 10.299 − 87 =
11. 11.332 − 86 =
12. 12.325 − 87 =
13. 13.564 − 78 =
14. 14.341 − 66 =
15. 15.484 − 67 =
16. 16.84 − 59 =
17. 17.511 − 89 =
18. 18.523 − 86 =
19. 19.297 − 76 =
20. 20.564 − 98 =
21. 21.152 − 58 =
22. 22.442 − 29 =
23. 23.545 − 17 =
24. 24.377 − 16 =
25. 25.522 − 18 =
26. 26.304 − 89 =
27. 27.157 − 78 =
28. 28.284 − 98 =
29. 29.480 − 89 =
30. 30.567 − 18 =
31. 31.474 − 59 =
32. 32.184 − 98 =
33. 33.594 − 97 =
34. 34.174 − 78 =
35. 35.363 − 76 =
36. 36.368 − 16 =
37. 37.212 − 38 =
38. 38.70 − 68 =
39. 39.363 − 58 =
40. 40.217 − 19 =

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