Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 278 · 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. 1.293 − 78 =
2. 2.162 − 57 =
3. 3.108 − 28 =
4. 4.156 − 87 =
5. 5.222 − 56 =
6. 6.116 − 59 =
7. 7.293 − 19 =
8. 8.365 − 27 =
9. 9.143 − 18 =
10. 10.294 − 97 =
11. 11.220 − 26 =
12. 12.264 − 67 =
13. 13.349 − 39 =
14. 14.544 − 79 =
15. 15.429 − 99 =
16. 16.219 − 78 =
17. 17.174 − 98 =
18. 18.190 − 28 =
19. 19.455 − 49 =
20. 20.439 − 48 =
21. 21.157 − 57 =
22. 22.126 − 19 =
23. 23.224 − 27 =
24. 24.437 − 76 =
25. 25.160 − 48 =
26. 26.396 − 27 =
27. 27.132 − 18 =
28. 28.320 − 18 =
29. 29.70 − 26 =
30. 30.363 − 29 =
31. 31.319 − 77 =
32. 32.504 − 36 =
33. 33.550 − 39 =
34. 34.265 − 79 =
35. 35.107 − 76 =
36. 36.293 − 38 =
37. 37.220 − 38 =
38. 38.547 − 96 =
39. 39.421 − 37 =
40. 40.537 − 28 =

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