Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 820 · 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. 1.92 − 36 =
2. 2.186 − 37 =
3. 3.440 − 99 =
4. 4.284 − 48 =
5. 5.128 − 16 =
6. 6.97 − 46 =
7. 7.369 − 86 =
8. 8.329 − 26 =
9. 9.521 − 18 =
10. 10.521 − 36 =
11. 11.400 − 36 =
12. 12.415 − 17 =
13. 13.166 − 99 =
14. 14.291 − 26 =
15. 15.319 − 27 =
16. 16.464 − 27 =
17. 17.547 − 99 =
18. 18.272 − 36 =
19. 19.284 − 87 =
20. 20.248 − 76 =
21. 21.180 − 28 =
22. 22.304 − 39 =
23. 23.506 − 58 =
24. 24.161 − 49 =
25. 25.176 − 68 =
26. 26.164 − 78 =
27. 27.176 − 39 =
28. 28.375 − 26 =
29. 29.353 − 26 =
30. 30.202 − 99 =
31. 31.334 − 29 =
32. 32.464 − 17 =
33. 33.240 − 46 =
34. 34.320 − 76 =
35. 35.596 − 36 =
36. 36.154 − 97 =
37. 37.596 − 88 =
38. 38.102 − 17 =
39. 39.471 − 87 =
40. 40.178 − 57 =

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