Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 364 · 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. 1.575 − 37 =
2. 2.342 − 56 =
3. 3.553 − 58 =
4. 4.455 − 39 =
5. 5.463 − 26 =
6. 6.305 − 57 =
7. 7.255 − 27 =
8. 8.426 − 99 =
9. 9.219 − 48 =
10. 10.282 − 27 =
11. 11.57 − 46 =
12. 12.508 − 37 =
13. 13.168 − 38 =
14. 14.282 − 86 =
15. 15.80 − 28 =
16. 16.511 − 76 =
17. 17.558 − 16 =
18. 18.219 − 18 =
19. 19.177 − 47 =
20. 20.180 − 36 =
21. 21.361 − 89 =
22. 22.584 − 78 =
23. 23.508 − 96 =
24. 24.515 − 96 =
25. 25.533 − 36 =
26. 26.104 − 88 =
27. 27.544 − 38 =
28. 28.152 − 66 =
29. 29.391 − 66 =
30. 30.211 − 39 =
31. 31.403 − 16 =
32. 32.445 − 17 =
33. 33.585 − 39 =
34. 34.594 − 18 =
35. 35.532 − 79 =
36. 36.403 − 77 =
37. 37.266 − 57 =
38. 38.575 − 67 =
39. 39.360 − 59 =
40. 40.124 − 58 =

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