Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 582 · 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. 1.307 − 39 =
2. 2.422 − 18 =
3. 3.405 − 98 =
4. 4.539 − 28 =
5. 5.386 − 78 =
6. 6.441 − 59 =
7. 7.492 − 36 =
8. 8.358 − 56 =
9. 9.135 − 79 =
10. 10.256 − 88 =
11. 11.283 − 46 =
12. 12.535 − 96 =
13. 13.412 − 38 =
14. 14.291 − 89 =
15. 15.506 − 16 =
16. 16.133 − 87 =
17. 17.289 − 86 =
18. 18.390 − 98 =
19. 19.90 − 88 =
20. 20.158 − 68 =
21. 21.229 − 77 =
22. 22.149 − 89 =
23. 23.124 − 67 =
24. 24.111 − 36 =
25. 25.530 − 18 =
26. 26.465 − 68 =
27. 27.470 − 37 =
28. 28.415 − 46 =
29. 29.148 − 39 =
30. 30.75 − 39 =
31. 31.217 − 88 =
32. 32.341 − 89 =
33. 33.310 − 58 =
34. 34.179 − 28 =
35. 35.242 − 89 =
36. 36.84 − 37 =
37. 37.543 − 27 =
38. 38.450 − 48 =
39. 39.192 − 17 =
40. 40.114 − 26 =

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