Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 23 · 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. 1.104 − 78 =
2. 2.444 − 28 =
3. 3.61 − 37 =
4. 4.386 − 96 =
5. 5.221 − 78 =
6. 6.519 − 89 =
7. 7.290 − 56 =
8. 8.193 − 49 =
9. 9.221 − 18 =
10. 10.243 − 69 =
11. 11.332 − 37 =
12. 12.373 − 46 =
13. 13.373 − 47 =
14. 14.478 − 16 =
15. 15.476 − 46 =
16. 16.435 − 37 =
17. 17.316 − 89 =
18. 18.143 − 27 =
19. 19.110 − 19 =
20. 20.480 − 48 =
21. 21.247 − 39 =
22. 22.201 − 66 =
23. 23.109 − 77 =
24. 24.559 − 26 =
25. 25.573 − 57 =
26. 26.152 − 76 =
27. 27.87 − 57 =
28. 28.533 − 27 =
29. 29.80 − 77 =
30. 30.227 − 99 =
31. 31.179 − 39 =
32. 32.211 − 58 =
33. 33.163 − 29 =
34. 34.400 − 29 =
35. 35.119 − 26 =
36. 36.596 − 38 =
37. 37.146 − 47 =
38. 38.215 − 36 =
39. 39.136 − 56 =
40. 40.594 − 68 =

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