Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 826 · 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. 1.216 − 57 =
2. 2.204 − 67 =
3. 3.79 − 78 =
4. 4.498 − 17 =
5. 5.576 − 26 =
6. 6.305 − 16 =
7. 7.557 − 89 =
8. 8.324 − 49 =
9. 9.397 − 66 =
10. 10.151 − 16 =
11. 11.312 − 88 =
12. 12.469 − 39 =
13. 13.491 − 97 =
14. 14.391 − 18 =
15. 15.442 − 28 =
16. 16.187 − 99 =
17. 17.298 − 16 =
18. 18.373 − 66 =
19. 19.407 − 16 =
20. 20.513 − 98 =
21. 21.270 − 46 =
22. 22.380 − 56 =
23. 23.264 − 48 =
24. 24.85 − 16 =
25. 25.67 − 39 =
26. 26.483 − 67 =
27. 27.110 − 26 =
28. 28.261 − 28 =
29. 29.465 − 67 =
30. 30.515 − 49 =
31. 31.120 − 99 =
32. 32.146 − 79 =
33. 33.529 − 36 =
34. 34.589 − 56 =
35. 35.530 − 66 =
36. 36.599 − 16 =
37. 37.194 − 68 =
38. 38.439 − 36 =
39. 39.141 − 28 =
40. 40.309 − 17 =

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