Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 338 · 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. 1.81 − 58 =
2. 2.329 − 28 =
3. 3.435 − 66 =
4. 4.378 − 99 =
5. 5.258 − 46 =
6. 6.379 − 37 =
7. 7.345 − 78 =
8. 8.356 − 17 =
9. 9.291 − 56 =
10. 10.308 − 18 =
11. 11.498 − 86 =
12. 12.337 − 76 =
13. 13.222 − 46 =
14. 14.442 − 29 =
15. 15.382 − 36 =
16. 16.189 − 76 =
17. 17.394 − 88 =
18. 18.447 − 38 =
19. 19.124 − 16 =
20. 20.87 − 38 =
21. 21.304 − 57 =
22. 22.428 − 38 =
23. 23.343 − 38 =
24. 24.250 − 26 =
25. 25.109 − 69 =
26. 26.580 − 57 =
27. 27.536 − 28 =
28. 28.493 − 69 =
29. 29.542 − 88 =
30. 30.462 − 18 =
31. 31.499 − 96 =
32. 32.188 − 79 =
33. 33.316 − 27 =
34. 34.462 − 26 =
35. 35.522 − 79 =
36. 36.125 − 66 =
37. 37.283 − 78 =
38. 38.86 − 48 =
39. 39.227 − 27 =
40. 40.296 − 86 =

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