Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 422 · 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. 1.440 − 76 =
2. 2.541 − 69 =
3. 3.171 − 77 =
4. 4.551 − 48 =
5. 5.163 − 67 =
6. 6.163 − 76 =
7. 7.280 − 68 =
8. 8.547 − 99 =
9. 9.89 − 16 =
10. 10.207 − 57 =
11. 11.134 − 97 =
12. 12.77 − 68 =
13. 13.86 − 68 =
14. 14.287 − 46 =
15. 15.317 − 97 =
16. 16.207 − 26 =
17. 17.388 − 86 =
18. 18.533 − 38 =
19. 19.326 − 37 =
20. 20.172 − 66 =
21. 21.522 − 68 =
22. 22.586 − 46 =
23. 23.65 − 29 =
24. 24.107 − 36 =
25. 25.412 − 37 =
26. 26.175 − 38 =
27. 27.193 − 19 =
28. 28.369 − 36 =
29. 29.361 − 49 =
30. 30.550 − 36 =
31. 31.102 − 89 =
32. 32.393 − 77 =
33. 33.275 − 46 =
34. 34.215 − 58 =
35. 35.83 − 19 =
36. 36.106 − 46 =
37. 37.570 − 18 =
38. 38.268 − 76 =
39. 39.409 − 69 =
40. 40.86 − 18 =

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