Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 486 · 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. 1.566 − 77 =
2. 2.178 − 47 =
3. 3.103 − 37 =
4. 4.311 − 36 =
5. 5.395 − 26 =
6. 6.464 − 18 =
7. 7.254 − 56 =
8. 8.93 − 49 =
9. 9.153 − 76 =
10. 10.534 − 68 =
11. 11.193 − 36 =
12. 12.319 − 96 =
13. 13.413 − 16 =
14. 14.319 − 96 =
15. 15.414 − 46 =
16. 16.187 − 89 =
17. 17.115 − 89 =
18. 18.126 − 86 =
19. 19.356 − 46 =
20. 20.463 − 57 =
21. 21.79 − 28 =
22. 22.172 − 57 =
23. 23.408 − 77 =
24. 24.189 − 17 =
25. 25.450 − 29 =
26. 26.184 − 89 =
27. 27.502 − 77 =
28. 28.186 − 56 =
29. 29.248 − 68 =
30. 30.481 − 48 =
31. 31.158 − 98 =
32. 32.307 − 58 =
33. 33.198 − 79 =
34. 34.215 − 16 =
35. 35.567 − 28 =
36. 36.510 − 46 =
37. 37.393 − 39 =
38. 38.541 − 59 =
39. 39.211 − 68 =
40. 40.153 − 17 =

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