Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 727 · 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. 1.402 − 87 =
2. 2.97 − 26 =
3. 3.532 − 97 =
4. 4.106 − 97 =
5. 5.127 − 87 =
6. 6.77 − 76 =
7. 7.188 − 67 =
8. 8.425 − 28 =
9. 9.65 − 58 =
10. 10.122 − 86 =
11. 11.140 − 98 =
12. 12.303 − 19 =
13. 13.392 − 37 =
14. 14.195 − 29 =
15. 15.391 − 88 =
16. 16.141 − 86 =
17. 17.83 − 67 =
18. 18.494 − 37 =
19. 19.354 − 46 =
20. 20.429 − 99 =
21. 21.347 − 77 =
22. 22.344 − 46 =
23. 23.592 − 18 =
24. 24.130 − 96 =
25. 25.350 − 76 =
26. 26.480 − 49 =
27. 27.396 − 97 =
28. 28.199 − 19 =
29. 29.531 − 18 =
30. 30.247 − 28 =
31. 31.420 − 46 =
32. 32.304 − 46 =
33. 33.117 − 48 =
34. 34.181 − 77 =
35. 35.589 − 36 =
36. 36.179 − 98 =
37. 37.599 − 38 =
38. 38.540 − 77 =
39. 39.345 − 36 =
40. 40.356 − 28 =

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