Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 135 · 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. 1.301 − 27 =
2. 2.235 − 27 =
3. 3.272 − 36 =
4. 4.497 − 26 =
5. 5.170 − 68 =
6. 6.572 − 57 =
7. 7.549 − 76 =
8. 8.186 − 59 =
9. 9.290 − 88 =
10. 10.184 − 39 =
11. 11.384 − 37 =
12. 12.173 − 16 =
13. 13.546 − 56 =
14. 14.473 − 36 =
15. 15.572 − 77 =
16. 16.138 − 28 =
17. 17.386 − 56 =
18. 18.89 − 29 =
19. 19.258 − 77 =
20. 20.549 − 87 =
21. 21.111 − 88 =
22. 22.460 − 18 =
23. 23.487 − 58 =
24. 24.73 − 37 =
25. 25.107 − 69 =
26. 26.404 − 79 =
27. 27.292 − 38 =
28. 28.335 − 47 =
29. 29.372 − 96 =
30. 30.64 − 58 =
31. 31.81 − 59 =
32. 32.320 − 96 =
33. 33.209 − 59 =
34. 34.519 − 26 =
35. 35.322 − 46 =
36. 36.216 − 87 =
37. 37.507 − 48 =
38. 38.169 − 26 =
39. 39.363 − 66 =
40. 40.169 − 37 =

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