Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 30 · 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. 1.525 − 69 =
2. 2.102 − 39 =
3. 3.459 − 28 =
4. 4.289 − 99 =
5. 5.180 − 87 =
6. 6.445 − 96 =
7. 7.354 − 86 =
8. 8.250 − 96 =
9. 9.88 − 26 =
10. 10.148 − 77 =
11. 11.599 − 36 =
12. 12.502 − 38 =
13. 13.585 − 88 =
14. 14.138 − 87 =
15. 15.531 − 46 =
16. 16.551 − 78 =
17. 17.64 − 47 =
18. 18.505 − 66 =
19. 19.153 − 66 =
20. 20.524 − 98 =
21. 21.58 − 49 =
22. 22.167 − 36 =
23. 23.347 − 38 =
24. 24.409 − 59 =
25. 25.260 − 19 =
26. 26.585 − 69 =
27. 27.300 − 97 =
28. 28.589 − 69 =
29. 29.206 − 38 =
30. 30.106 − 37 =
31. 31.153 − 97 =
32. 32.583 − 67 =
33. 33.71 − 56 =
34. 34.557 − 99 =
35. 35.206 − 38 =
36. 36.96 − 17 =
37. 37.320 − 48 =
38. 38.86 − 27 =
39. 39.577 − 76 =
40. 40.281 − 77 =

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