Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 395 · 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. 1.204 − 67 =
2. 2.141 − 66 =
3. 3.242 − 79 =
4. 4.316 − 17 =
5. 5.512 − 87 =
6. 6.200 − 29 =
7. 7.155 − 26 =
8. 8.317 − 88 =
9. 9.455 − 48 =
10. 10.143 − 19 =
11. 11.574 − 26 =
12. 12.499 − 27 =
13. 13.248 − 88 =
14. 14.363 − 87 =
15. 15.399 − 87 =
16. 16.189 − 26 =
17. 17.295 − 88 =
18. 18.320 − 66 =
19. 19.581 − 76 =
20. 20.381 − 26 =
21. 21.304 − 56 =
22. 22.417 − 57 =
23. 23.344 − 86 =
24. 24.184 − 97 =
25. 25.166 − 28 =
26. 26.80 − 66 =
27. 27.431 − 76 =
28. 28.169 − 99 =
29. 29.157 − 37 =
30. 30.509 − 79 =
31. 31.267 − 78 =
32. 32.564 − 48 =
33. 33.152 − 69 =
34. 34.475 − 66 =
35. 35.116 − 58 =
36. 36.546 − 18 =
37. 37.481 − 68 =
38. 38.418 − 17 =
39. 39.140 − 19 =
40. 40.173 − 88 =

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