Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 309 · 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. 1.340 − 29 =
2. 2.221 − 37 =
3. 3.451 − 59 =
4. 4.321 − 19 =
5. 5.598 − 67 =
6. 6.361 − 98 =
7. 7.403 − 36 =
8. 8.491 − 98 =
9. 9.189 − 66 =
10. 10.562 − 89 =
11. 11.549 − 97 =
12. 12.68 − 26 =
13. 13.305 − 67 =
14. 14.366 − 36 =
15. 15.338 − 27 =
16. 16.520 − 97 =
17. 17.479 − 98 =
18. 18.189 − 89 =
19. 19.201 − 18 =
20. 20.573 − 57 =
21. 21.194 − 18 =
22. 22.115 − 97 =
23. 23.488 − 17 =
24. 24.152 − 96 =
25. 25.557 − 79 =
26. 26.465 − 77 =
27. 27.267 − 68 =
28. 28.486 − 66 =
29. 29.172 − 77 =
30. 30.205 − 98 =
31. 31.126 − 89 =
32. 32.575 − 26 =
33. 33.158 − 57 =
34. 34.517 − 89 =
35. 35.96 − 89 =
36. 36.371 − 66 =
37. 37.149 − 29 =
38. 38.110 − 49 =
39. 39.163 − 37 =
40. 40.127 − 36 =

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