Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 326 · 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. 1.543 − 47 =
2. 2.171 − 36 =
3. 3.301 − 89 =
4. 4.177 − 46 =
5. 5.428 − 48 =
6. 6.311 − 76 =
7. 7.437 − 57 =
8. 8.188 − 97 =
9. 9.508 − 66 =
10. 10.159 − 38 =
11. 11.146 − 48 =
12. 12.414 − 79 =
13. 13.313 − 87 =
14. 14.213 − 67 =
15. 15.105 − 97 =
16. 16.458 − 18 =
17. 17.160 − 59 =
18. 18.236 − 67 =
19. 19.143 − 86 =
20. 20.362 − 47 =
21. 21.127 − 27 =
22. 22.570 − 58 =
23. 23.167 − 86 =
24. 24.419 − 19 =
25. 25.450 − 38 =
26. 26.163 − 88 =
27. 27.193 − 28 =
28. 28.288 − 39 =
29. 29.83 − 28 =
30. 30.91 − 57 =
31. 31.300 − 98 =
32. 32.305 − 76 =
33. 33.107 − 77 =
34. 34.220 − 66 =
35. 35.61 − 37 =
36. 36.175 − 96 =
37. 37.251 − 28 =
38. 38.220 − 67 =
39. 39.411 − 38 =
40. 40.296 − 27 =

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