Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 64 · 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. 1.138 − 58 =
2. 2.107 − 86 =
3. 3.370 − 99 =
4. 4.467 − 28 =
5. 5.185 − 39 =
6. 6.522 − 87 =
7. 7.483 − 27 =
8. 8.270 − 68 =
9. 9.166 − 86 =
10. 10.188 − 76 =
11. 11.127 − 98 =
12. 12.346 − 59 =
13. 13.297 − 26 =
14. 14.452 − 78 =
15. 15.467 − 49 =
16. 16.326 − 68 =
17. 17.397 − 56 =
18. 18.138 − 57 =
19. 19.385 − 16 =
20. 20.168 − 69 =
21. 21.312 − 88 =
22. 22.576 − 56 =
23. 23.207 − 69 =
24. 24.333 − 56 =
25. 25.494 − 77 =
26. 26.232 − 27 =
27. 27.149 − 97 =
28. 28.178 − 87 =
29. 29.413 − 27 =
30. 30.465 − 57 =
31. 31.223 − 57 =
32. 32.557 − 47 =
33. 33.72 − 26 =
34. 34.117 − 27 =
35. 35.473 − 39 =
36. 36.400 − 56 =
37. 37.109 − 38 =
38. 38.586 − 46 =
39. 39.278 − 17 =
40. 40.598 − 86 =

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