Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 728 · 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. 1.516 − 89 =
2. 2.581 − 97 =
3. 3.380 − 56 =
4. 4.252 − 37 =
5. 5.574 − 16 =
6. 6.277 − 29 =
7. 7.569 − 37 =
8. 8.87 − 29 =
9. 9.410 − 89 =
10. 10.262 − 38 =
11. 11.593 − 28 =
12. 12.401 − 36 =
13. 13.170 − 78 =
14. 14.255 − 39 =
15. 15.205 − 58 =
16. 16.381 − 97 =
17. 17.226 − 66 =
18. 18.308 − 97 =
19. 19.240 − 47 =
20. 20.403 − 37 =
21. 21.321 − 58 =
22. 22.389 − 87 =
23. 23.259 − 96 =
24. 24.492 − 76 =
25. 25.105 − 86 =
26. 26.579 − 26 =
27. 27.563 − 19 =
28. 28.564 − 37 =
29. 29.533 − 77 =
30. 30.230 − 18 =
31. 31.257 − 59 =
32. 32.173 − 26 =
33. 33.334 − 68 =
34. 34.385 − 76 =
35. 35.161 − 86 =
36. 36.290 − 78 =
37. 37.254 − 99 =
38. 38.172 − 88 =
39. 39.379 − 36 =
40. 40.568 − 96 =

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