Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 564 · 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. 1.473 − 88 =
2. 2.194 − 97 =
3. 3.496 − 56 =
4. 4.531 − 58 =
5. 5.66 − 29 =
6. 6.162 − 69 =
7. 7.560 − 97 =
8. 8.436 − 97 =
9. 9.173 − 89 =
10. 10.318 − 58 =
11. 11.397 − 66 =
12. 12.145 − 18 =
13. 13.401 − 37 =
14. 14.595 − 97 =
15. 15.110 − 69 =
16. 16.435 − 36 =
17. 17.493 − 99 =
18. 18.589 − 48 =
19. 19.413 − 66 =
20. 20.229 − 67 =
21. 21.451 − 26 =
22. 22.73 − 19 =
23. 23.201 − 18 =
24. 24.381 − 27 =
25. 25.498 − 96 =
26. 26.440 − 39 =
27. 27.287 − 56 =
28. 28.220 − 86 =
29. 29.536 − 26 =
30. 30.89 − 78 =
31. 31.253 − 96 =
32. 32.169 − 17 =
33. 33.529 − 56 =
34. 34.144 − 68 =
35. 35.507 − 78 =
36. 36.428 − 56 =
37. 37.52 − 36 =
38. 38.497 − 47 =
39. 39.211 − 99 =
40. 40.295 − 76 =

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