Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 240 · 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. 1.501 − 59 =
2. 2.550 − 89 =
3. 3.172 − 29 =
4. 4.133 − 59 =
5. 5.154 − 56 =
6. 6.119 − 49 =
7. 7.72 − 39 =
8. 8.121 − 37 =
9. 9.87 − 79 =
10. 10.589 − 99 =
11. 11.380 − 68 =
12. 12.403 − 29 =
13. 13.114 − 97 =
14. 14.364 − 18 =
15. 15.281 − 57 =
16. 16.448 − 99 =
17. 17.507 − 28 =
18. 18.592 − 27 =
19. 19.211 − 37 =
20. 20.165 − 86 =
21. 21.377 − 88 =
22. 22.191 − 97 =
23. 23.111 − 38 =
24. 24.575 − 98 =
25. 25.242 − 99 =
26. 26.414 − 46 =
27. 27.398 − 16 =
28. 28.499 − 99 =
29. 29.189 − 86 =
30. 30.505 − 96 =
31. 31.427 − 76 =
32. 32.529 − 68 =
33. 33.558 − 98 =
34. 34.293 − 67 =
35. 35.452 − 59 =
36. 36.205 − 78 =
37. 37.243 − 87 =
38. 38.412 − 48 =
39. 39.571 − 86 =
40. 40.208 − 39 =

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