Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 868 · 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. 1.109 − 97 =
2. 2.295 − 88 =
3. 3.398 − 68 =
4. 4.506 − 47 =
5. 5.170 − 77 =
6. 6.167 − 76 =
7. 7.372 − 37 =
8. 8.407 − 36 =
9. 9.439 − 69 =
10. 10.298 − 57 =
11. 11.520 − 57 =
12. 12.285 − 76 =
13. 13.526 − 37 =
14. 14.460 − 66 =
15. 15.121 − 66 =
16. 16.296 − 66 =
17. 17.133 − 86 =
18. 18.370 − 46 =
19. 19.368 − 97 =
20. 20.156 − 77 =
21. 21.517 − 96 =
22. 22.114 − 99 =
23. 23.163 − 69 =
24. 24.370 − 17 =
25. 25.474 − 58 =
26. 26.110 − 29 =
27. 27.328 − 37 =
28. 28.378 − 19 =
29. 29.189 − 36 =
30. 30.81 − 76 =
31. 31.486 − 27 =
32. 32.135 − 26 =
33. 33.406 − 37 =
34. 34.275 − 58 =
35. 35.320 − 19 =
36. 36.363 − 17 =
37. 37.120 − 59 =
38. 38.237 − 26 =
39. 39.59 − 26 =
40. 40.437 − 29 =

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