Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 139 · 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. 1.518 − 27 =
2. 2.371 − 26 =
3. 3.154 − 36 =
4. 4.184 − 48 =
5. 5.239 − 89 =
6. 6.256 − 67 =
7. 7.287 − 59 =
8. 8.541 − 97 =
9. 9.140 − 27 =
10. 10.398 − 67 =
11. 11.299 − 47 =
12. 12.144 − 17 =
13. 13.457 − 38 =
14. 14.211 − 49 =
15. 15.504 − 77 =
16. 16.188 − 86 =
17. 17.378 − 89 =
18. 18.403 − 67 =
19. 19.167 − 17 =
20. 20.153 − 89 =
21. 21.94 − 37 =
22. 22.508 − 19 =
23. 23.517 − 99 =
24. 24.371 − 99 =
25. 25.188 − 88 =
26. 26.181 − 36 =
27. 27.82 − 16 =
28. 28.102 − 28 =
29. 29.430 − 88 =
30. 30.293 − 28 =
31. 31.589 − 58 =
32. 32.368 − 77 =
33. 33.540 − 57 =
34. 34.327 − 77 =
35. 35.188 − 39 =
36. 36.451 − 86 =
37. 37.598 − 59 =
38. 38.92 − 46 =
39. 39.556 − 46 =
40. 40.525 − 78 =

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