Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 138 · 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. 1.437 − 86 =
2. 2.174 − 96 =
3. 3.410 − 28 =
4. 4.309 − 68 =
5. 5.374 − 36 =
6. 6.230 − 28 =
7. 7.232 − 36 =
8. 8.223 − 38 =
9. 9.256 − 37 =
10. 10.119 − 66 =
11. 11.395 − 39 =
12. 12.256 − 46 =
13. 13.545 − 87 =
14. 14.269 − 77 =
15. 15.508 − 46 =
16. 16.182 − 86 =
17. 17.392 − 96 =
18. 18.229 − 76 =
19. 19.232 − 26 =
20. 20.218 − 57 =
21. 21.466 − 26 =
22. 22.588 − 26 =
23. 23.271 − 46 =
24. 24.482 − 19 =
25. 25.419 − 26 =
26. 26.284 − 28 =
27. 27.280 − 56 =
28. 28.114 − 77 =
29. 29.143 − 17 =
30. 30.269 − 29 =
31. 31.269 − 87 =
32. 32.223 − 67 =
33. 33.596 − 47 =
34. 34.549 − 69 =
35. 35.132 − 58 =
36. 36.114 − 28 =
37. 37.543 − 39 =
38. 38.574 − 87 =
39. 39.80 − 39 =
40. 40.202 − 37 =

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