Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 434 · 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. 1.338 − 18 =
2. 2.348 − 16 =
3. 3.279 − 49 =
4. 4.423 − 17 =
5. 5.417 − 98 =
6. 6.352 − 89 =
7. 7.498 − 98 =
8. 8.527 − 96 =
9. 9.565 − 68 =
10. 10.366 − 78 =
11. 11.547 − 86 =
12. 12.537 − 66 =
13. 13.557 − 86 =
14. 14.555 − 38 =
15. 15.251 − 37 =
16. 16.500 − 66 =
17. 17.315 − 59 =
18. 18.102 − 56 =
19. 19.398 − 86 =
20. 20.356 − 46 =
21. 21.309 − 76 =
22. 22.171 − 97 =
23. 23.333 − 86 =
24. 24.417 − 36 =
25. 25.109 − 59 =
26. 26.415 − 46 =
27. 27.144 − 76 =
28. 28.110 − 56 =
29. 29.376 − 56 =
30. 30.311 − 97 =
31. 31.485 − 77 =
32. 32.280 − 68 =
33. 33.279 − 48 =
34. 34.547 − 68 =
35. 35.169 − 56 =
36. 36.106 − 26 =
37. 37.163 − 46 =
38. 38.314 − 47 =
39. 39.138 − 58 =
40. 40.172 − 98 =

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