Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 284 · 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. 1.329 − 49 =
2. 2.195 − 89 =
3. 3.419 − 59 =
4. 4.569 − 56 =
5. 5.412 − 97 =
6. 6.160 − 97 =
7. 7.270 − 26 =
8. 8.414 − 77 =
9. 9.151 − 28 =
10. 10.222 − 27 =
11. 11.150 − 47 =
12. 12.374 − 26 =
13. 13.481 − 38 =
14. 14.328 − 48 =
15. 15.552 − 18 =
16. 16.166 − 26 =
17. 17.440 − 56 =
18. 18.535 − 48 =
19. 19.366 − 49 =
20. 20.257 − 46 =
21. 21.297 − 27 =
22. 22.190 − 96 =
23. 23.214 − 47 =
24. 24.195 − 89 =
25. 25.384 − 39 =
26. 26.226 − 37 =
27. 27.519 − 97 =
28. 28.345 − 68 =
29. 29.239 − 56 =
30. 30.286 − 49 =
31. 31.523 − 98 =
32. 32.72 − 46 =
33. 33.518 − 36 =
34. 34.84 − 46 =
35. 35.196 − 58 =
36. 36.429 − 88 =
37. 37.200 − 86 =
38. 38.384 − 86 =
39. 39.167 − 89 =
40. 40.82 − 48 =

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