Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 443 · 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. 1.296 − 57 =
2. 2.175 − 78 =
3. 3.564 − 29 =
4. 4.588 − 86 =
5. 5.319 − 78 =
6. 6.192 − 27 =
7. 7.300 − 66 =
8. 8.179 − 89 =
9. 9.578 − 27 =
10. 10.212 − 19 =
11. 11.411 − 67 =
12. 12.408 − 27 =
13. 13.590 − 17 =
14. 14.531 − 56 =
15. 15.136 − 59 =
16. 16.157 − 39 =
17. 17.554 − 68 =
18. 18.292 − 69 =
19. 19.164 − 66 =
20. 20.312 − 68 =
21. 21.581 − 39 =
22. 22.500 − 67 =
23. 23.483 − 76 =
24. 24.554 − 99 =
25. 25.510 − 56 =
26. 26.471 − 16 =
27. 27.523 − 16 =
28. 28.407 − 88 =
29. 29.86 − 56 =
30. 30.192 − 86 =
31. 31.166 − 89 =
32. 32.263 − 96 =
33. 33.555 − 26 =
34. 34.539 − 88 =
35. 35.285 − 47 =
36. 36.73 − 19 =
37. 37.291 − 76 =
38. 38.546 − 76 =
39. 39.500 − 77 =
40. 40.129 − 69 =

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