Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 809 · 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. 1.181 − 47 =
2. 2.483 − 67 =
3. 3.551 − 88 =
4. 4.216 − 68 =
5. 5.392 − 98 =
6. 6.267 − 77 =
7. 7.81 − 26 =
8. 8.466 − 26 =
9. 9.358 − 17 =
10. 10.599 − 67 =
11. 11.588 − 86 =
12. 12.216 − 68 =
13. 13.187 − 76 =
14. 14.308 − 98 =
15. 15.168 − 97 =
16. 16.164 − 87 =
17. 17.565 − 16 =
18. 18.277 − 97 =
19. 19.150 − 16 =
20. 20.155 − 28 =
21. 21.83 − 39 =
22. 22.522 − 58 =
23. 23.98 − 47 =
24. 24.283 − 26 =
25. 25.315 − 36 =
26. 26.526 − 98 =
27. 27.239 − 36 =
28. 28.311 − 47 =
29. 29.86 − 18 =
30. 30.177 − 88 =
31. 31.136 − 88 =
32. 32.150 − 28 =
33. 33.125 − 69 =
34. 34.122 − 27 =
35. 35.288 − 39 =
36. 36.429 − 58 =
37. 37.438 − 38 =
38. 38.297 − 98 =
39. 39.292 − 19 =
40. 40.96 − 76 =

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