Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 544 · 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. 1.252 − 77 =
2. 2.301 − 57 =
3. 3.268 − 17 =
4. 4.440 − 29 =
5. 5.92 − 56 =
6. 6.365 − 67 =
7. 7.371 − 37 =
8. 8.545 − 28 =
9. 9.139 − 38 =
10. 10.324 − 59 =
11. 11.418 − 88 =
12. 12.225 − 39 =
13. 13.384 − 87 =
14. 14.206 − 28 =
15. 15.563 − 47 =
16. 16.97 − 46 =
17. 17.498 − 57 =
18. 18.178 − 37 =
19. 19.421 − 18 =
20. 20.329 − 89 =
21. 21.459 − 99 =
22. 22.319 − 67 =
23. 23.239 − 66 =
24. 24.248 − 37 =
25. 25.405 − 17 =
26. 26.461 − 88 =
27. 27.280 − 58 =
28. 28.422 − 17 =
29. 29.533 − 27 =
30. 30.342 − 39 =
31. 31.454 − 27 =
32. 32.88 − 86 =
33. 33.465 − 57 =
34. 34.60 − 28 =
35. 35.492 − 69 =
36. 36.94 − 77 =
37. 37.594 − 48 =
38. 38.77 − 57 =
39. 39.439 − 69 =
40. 40.238 − 27 =

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