Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 114 · 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. 1.353 − 29 =
2. 2.330 − 69 =
3. 3.522 − 16 =
4. 4.262 − 28 =
5. 5.83 − 16 =
6. 6.430 − 68 =
7. 7.371 − 39 =
8. 8.135 − 28 =
9. 9.201 − 68 =
10. 10.181 − 88 =
11. 11.250 − 36 =
12. 12.320 − 39 =
13. 13.73 − 67 =
14. 14.84 − 19 =
15. 15.101 − 39 =
16. 16.183 − 57 =
17. 17.397 − 27 =
18. 18.478 − 19 =
19. 19.434 − 59 =
20. 20.145 − 19 =
21. 21.147 − 27 =
22. 22.390 − 56 =
23. 23.251 − 69 =
24. 24.180 − 26 =
25. 25.263 − 48 =
26. 26.157 − 97 =
27. 27.539 − 46 =
28. 28.584 − 48 =
29. 29.157 − 98 =
30. 30.150 − 56 =
31. 31.177 − 87 =
32. 32.86 − 76 =
33. 33.402 − 59 =
34. 34.305 − 16 =
35. 35.379 − 58 =
36. 36.431 − 27 =
37. 37.313 − 29 =
38. 38.79 − 37 =
39. 39.117 − 37 =
40. 40.518 − 16 =

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