Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 231 · 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. 1.59 − 16 =
2. 2.444 − 26 =
3. 3.413 − 17 =
4. 4.290 − 87 =
5. 5.571 − 28 =
6. 6.254 − 27 =
7. 7.567 − 67 =
8. 8.163 − 17 =
9. 9.123 − 27 =
10. 10.146 − 18 =
11. 11.341 − 78 =
12. 12.209 − 48 =
13. 13.80 − 46 =
14. 14.391 − 58 =
15. 15.295 − 98 =
16. 16.93 − 19 =
17. 17.285 − 29 =
18. 18.532 − 66 =
19. 19.456 − 48 =
20. 20.449 − 48 =
21. 21.463 − 17 =
22. 22.586 − 96 =
23. 23.444 − 79 =
24. 24.594 − 86 =
25. 25.147 − 19 =
26. 26.269 − 56 =
27. 27.84 − 56 =
28. 28.558 − 98 =
29. 29.576 − 29 =
30. 30.352 − 86 =
31. 31.465 − 17 =
32. 32.95 − 79 =
33. 33.482 − 57 =
34. 34.405 − 79 =
35. 35.141 − 16 =
36. 36.506 − 47 =
37. 37.200 − 89 =
38. 38.373 − 59 =
39. 39.320 − 28 =
40. 40.149 − 28 =

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