Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 622 · 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. 1.183 − 86 =
2. 2.483 − 17 =
3. 3.198 − 26 =
4. 4.289 − 38 =
5. 5.75 − 56 =
6. 6.193 − 68 =
7. 7.388 − 66 =
8. 8.512 − 67 =
9. 9.86 − 27 =
10. 10.214 − 48 =
11. 11.208 − 57 =
12. 12.405 − 89 =
13. 13.150 − 76 =
14. 14.449 − 77 =
15. 15.124 − 27 =
16. 16.204 − 79 =
17. 17.453 − 49 =
18. 18.181 − 76 =
19. 19.147 − 48 =
20. 20.482 − 16 =
21. 21.573 − 16 =
22. 22.242 − 78 =
23. 23.290 − 29 =
24. 24.515 − 78 =
25. 25.282 − 87 =
26. 26.527 − 76 =
27. 27.115 − 77 =
28. 28.577 − 98 =
29. 29.152 − 16 =
30. 30.75 − 26 =
31. 31.483 − 97 =
32. 32.188 − 88 =
33. 33.155 − 16 =
34. 34.472 − 19 =
35. 35.157 − 88 =
36. 36.272 − 38 =
37. 37.227 − 48 =
38. 38.413 − 57 =
39. 39.559 − 26 =
40. 40.158 − 66 =

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