Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 995 · 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. 1.83 − 17 =
2. 2.540 − 28 =
3. 3.210 − 46 =
4. 4.380 − 59 =
5. 5.345 − 39 =
6. 6.254 − 66 =
7. 7.507 − 59 =
8. 8.152 − 78 =
9. 9.315 − 58 =
10. 10.148 − 46 =
11. 11.248 − 96 =
12. 12.212 − 26 =
13. 13.70 − 39 =
14. 14.346 − 88 =
15. 15.404 − 37 =
16. 16.97 − 18 =
17. 17.593 − 17 =
18. 18.494 − 78 =
19. 19.202 − 88 =
20. 20.168 − 99 =
21. 21.98 − 19 =
22. 22.171 − 67 =
23. 23.261 − 88 =
24. 24.105 − 36 =
25. 25.209 − 67 =
26. 26.453 − 69 =
27. 27.525 − 76 =
28. 28.174 − 79 =
29. 29.572 − 59 =
30. 30.183 − 96 =
31. 31.192 − 18 =
32. 32.337 − 67 =
33. 33.567 − 78 =
34. 34.537 − 56 =
35. 35.530 − 68 =
36. 36.191 − 29 =
37. 37.543 − 67 =
38. 38.414 − 99 =
39. 39.536 − 16 =
40. 40.530 − 56 =

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