Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 779 · 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. 1.276 − 18 =
2. 2.562 − 39 =
3. 3.331 − 58 =
4. 4.72 − 37 =
5. 5.393 − 29 =
6. 6.294 − 19 =
7. 7.204 − 48 =
8. 8.168 − 27 =
9. 9.161 − 76 =
10. 10.378 − 69 =
11. 11.447 − 76 =
12. 12.184 − 56 =
13. 13.373 − 79 =
14. 14.207 − 96 =
15. 15.315 − 97 =
16. 16.406 − 17 =
17. 17.420 − 27 =
18. 18.154 − 29 =
19. 19.81 − 56 =
20. 20.195 − 87 =
21. 21.523 − 77 =
22. 22.132 − 38 =
23. 23.214 − 89 =
24. 24.169 − 69 =
25. 25.588 − 36 =
26. 26.587 − 27 =
27. 27.219 − 97 =
28. 28.555 − 56 =
29. 29.282 − 17 =
30. 30.76 − 26 =
31. 31.62 − 18 =
32. 32.508 − 68 =
33. 33.420 − 56 =
34. 34.511 − 38 =
35. 35.175 − 96 =
36. 36.411 − 68 =
37. 37.359 − 19 =
38. 38.453 − 49 =
39. 39.574 − 16 =
40. 40.359 − 18 =

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