Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 621 · 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. 1.417 − 66 =
2. 2.182 − 37 =
3. 3.346 − 26 =
4. 4.170 − 98 =
5. 5.404 − 29 =
6. 6.189 − 39 =
7. 7.442 − 47 =
8. 8.204 − 77 =
9. 9.353 − 67 =
10. 10.308 − 67 =
11. 11.104 − 66 =
12. 12.236 − 46 =
13. 13.215 − 26 =
14. 14.244 − 87 =
15. 15.358 − 78 =
16. 16.403 − 37 =
17. 17.495 − 97 =
18. 18.324 − 57 =
19. 19.175 − 38 =
20. 20.339 − 58 =
21. 21.243 − 96 =
22. 22.331 − 46 =
23. 23.237 − 56 =
24. 24.234 − 98 =
25. 25.587 − 17 =
26. 26.465 − 46 =
27. 27.352 − 89 =
28. 28.181 − 88 =
29. 29.237 − 47 =
30. 30.346 − 37 =
31. 31.313 − 97 =
32. 32.450 − 78 =
33. 33.539 − 66 =
34. 34.266 − 26 =
35. 35.421 − 69 =
36. 36.442 − 39 =
37. 37.348 − 27 =
38. 38.244 − 19 =
39. 39.380 − 77 =
40. 40.366 − 18 =

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