Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 626 · 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. 1.429 − 27 =
2. 2.568 − 66 =
3. 3.289 − 18 =
4. 4.275 − 56 =
5. 5.290 − 38 =
6. 6.526 − 19 =
7. 7.361 − 56 =
8. 8.91 − 28 =
9. 9.111 − 67 =
10. 10.138 − 89 =
11. 11.132 − 66 =
12. 12.109 − 26 =
13. 13.53 − 47 =
14. 14.516 − 36 =
15. 15.295 − 27 =
16. 16.550 − 29 =
17. 17.506 − 57 =
18. 18.464 − 26 =
19. 19.326 − 76 =
20. 20.196 − 28 =
21. 21.171 − 97 =
22. 22.494 − 36 =
23. 23.55 − 49 =
24. 24.260 − 18 =
25. 25.309 − 68 =
26. 26.592 − 88 =
27. 27.251 − 37 =
28. 28.245 − 38 =
29. 29.571 − 39 =
30. 30.125 − 49 =
31. 31.588 − 88 =
32. 32.210 − 98 =
33. 33.160 − 79 =
34. 34.280 − 98 =
35. 35.72 − 26 =
36. 36.502 − 76 =
37. 37.240 − 88 =
38. 38.98 − 26 =
39. 39.110 − 18 =
40. 40.136 − 99 =

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