Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 157 · 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. 1.289 − 68 =
2. 2.231 − 16 =
3. 3.110 − 17 =
4. 4.356 − 36 =
5. 5.343 − 26 =
6. 6.59 − 18 =
7. 7.80 − 47 =
8. 8.107 − 67 =
9. 9.217 − 56 =
10. 10.338 − 29 =
11. 11.290 − 19 =
12. 12.371 − 18 =
13. 13.163 − 66 =
14. 14.490 − 66 =
15. 15.579 − 16 =
16. 16.305 − 49 =
17. 17.197 − 16 =
18. 18.314 − 29 =
19. 19.143 − 96 =
20. 20.342 − 37 =
21. 21.256 − 38 =
22. 22.379 − 69 =
23. 23.265 − 37 =
24. 24.200 − 38 =
25. 25.171 − 98 =
26. 26.132 − 96 =
27. 27.328 − 27 =
28. 28.404 − 98 =
29. 29.425 − 16 =
30. 30.331 − 67 =
31. 31.476 − 97 =
32. 32.264 − 67 =
33. 33.75 − 26 =
34. 34.518 − 96 =
35. 35.185 − 36 =
36. 36.301 − 87 =
37. 37.344 − 69 =
38. 38.126 − 56 =
39. 39.562 − 56 =
40. 40.452 − 18 =

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