Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 6 · 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. 1.599 − 38 =
2. 2.447 − 56 =
3. 3.557 − 57 =
4. 4.126 − 37 =
5. 5.557 − 87 =
6. 6.141 − 28 =
7. 7.514 − 78 =
8. 8.581 − 66 =
9. 9.152 − 66 =
10. 10.223 − 28 =
11. 11.251 − 99 =
12. 12.392 − 49 =
13. 13.463 − 16 =
14. 14.533 − 16 =
15. 15.574 − 89 =
16. 16.294 − 67 =
17. 17.454 − 58 =
18. 18.83 − 77 =
19. 19.557 − 26 =
20. 20.432 − 77 =
21. 21.488 − 79 =
22. 22.560 − 96 =
23. 23.394 − 77 =
24. 24.554 − 19 =
25. 25.477 − 66 =
26. 26.172 − 88 =
27. 27.502 − 86 =
28. 28.431 − 77 =
29. 29.400 − 38 =
30. 30.135 − 99 =
31. 31.140 − 36 =
32. 32.355 − 46 =
33. 33.403 − 48 =
34. 34.174 − 36 =
35. 35.341 − 28 =
36. 36.140 − 59 =
37. 37.553 − 78 =
38. 38.416 − 96 =
39. 39.566 − 68 =
40. 40.153 − 79 =

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