Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 890 · 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. 1.265 − 36 =
2. 2.316 − 86 =
3. 3.565 − 66 =
4. 4.137 − 26 =
5. 5.119 − 38 =
6. 6.76 − 57 =
7. 7.402 − 29 =
8. 8.487 − 28 =
9. 9.320 − 69 =
10. 10.507 − 27 =
11. 11.283 − 27 =
12. 12.408 − 89 =
13. 13.390 − 27 =
14. 14.391 − 26 =
15. 15.337 − 68 =
16. 16.54 − 29 =
17. 17.303 − 89 =
18. 18.363 − 26 =
19. 19.210 − 26 =
20. 20.58 − 47 =
21. 21.455 − 16 =
22. 22.477 − 39 =
23. 23.351 − 16 =
24. 24.178 − 87 =
25. 25.443 − 59 =
26. 26.353 − 66 =
27. 27.499 − 27 =
28. 28.101 − 57 =
29. 29.143 − 17 =
30. 30.530 − 48 =
31. 31.474 − 57 =
32. 32.487 − 89 =
33. 33.165 − 66 =
34. 34.341 − 68 =
35. 35.337 − 66 =
36. 36.325 − 78 =
37. 37.194 − 28 =
38. 38.121 − 39 =
39. 39.147 − 38 =
40. 40.162 − 69 =

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