Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 4 · 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. 1.555 − 56 =
2. 2.558 − 26 =
3. 3.519 − 19 =
4. 4.544 − 68 =
5. 5.461 − 67 =
6. 6.438 − 59 =
7. 7.457 − 98 =
8. 8.307 − 96 =
9. 9.234 − 96 =
10. 10.285 − 57 =
11. 11.402 − 87 =
12. 12.599 − 99 =
13. 13.182 − 56 =
14. 14.527 − 17 =
15. 15.339 − 38 =
16. 16.570 − 78 =
17. 17.93 − 77 =
18. 18.349 − 66 =
19. 19.319 − 16 =
20. 20.220 − 19 =
21. 21.105 − 96 =
22. 22.391 − 46 =
23. 23.595 − 76 =
24. 24.102 − 19 =
25. 25.455 − 69 =
26. 26.113 − 16 =
27. 27.208 − 39 =
28. 28.499 − 97 =
29. 29.367 − 56 =
30. 30.447 − 87 =
31. 31.162 − 39 =
32. 32.260 − 17 =
33. 33.166 − 68 =
34. 34.269 − 37 =
35. 35.585 − 46 =
36. 36.221 − 39 =
37. 37.194 − 89 =
38. 38.158 − 28 =
39. 39.286 − 79 =
40. 40.131 − 47 =

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