Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 978 · 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. 1.101 − 27 =
2. 2.322 − 67 =
3. 3.156 − 57 =
4. 4.250 − 86 =
5. 5.441 − 66 =
6. 6.176 − 67 =
7. 7.445 − 89 =
8. 8.588 − 19 =
9. 9.176 − 76 =
10. 10.517 − 78 =
11. 11.260 − 28 =
12. 12.463 − 57 =
13. 13.592 − 59 =
14. 14.441 − 97 =
15. 15.421 − 68 =
16. 16.152 − 37 =
17. 17.105 − 88 =
18. 18.495 − 68 =
19. 19.278 − 36 =
20. 20.355 − 88 =
21. 21.533 − 96 =
22. 22.422 − 16 =
23. 23.437 − 28 =
24. 24.120 − 68 =
25. 25.161 − 89 =
26. 26.218 − 16 =
27. 27.293 − 96 =
28. 28.165 − 69 =
29. 29.96 − 77 =
30. 30.423 − 16 =
31. 31.321 − 68 =
32. 32.361 − 88 =
33. 33.424 − 56 =
34. 34.522 − 17 =
35. 35.443 − 18 =
36. 36.237 − 96 =
37. 37.467 − 66 =
38. 38.304 − 77 =
39. 39.305 − 18 =
40. 40.97 − 39 =

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