Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 674 · 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. 1.575 − 26 =
2. 2.245 − 37 =
3. 3.188 − 47 =
4. 4.429 − 88 =
5. 5.281 − 17 =
6. 6.370 − 79 =
7. 7.202 − 68 =
8. 8.294 − 16 =
9. 9.179 − 99 =
10. 10.136 − 88 =
11. 11.146 − 66 =
12. 12.294 − 29 =
13. 13.285 − 78 =
14. 14.129 − 26 =
15. 15.593 − 47 =
16. 16.135 − 46 =
17. 17.567 − 19 =
18. 18.454 − 59 =
19. 19.333 − 76 =
20. 20.99 − 37 =
21. 21.169 − 77 =
22. 22.157 − 16 =
23. 23.187 − 99 =
24. 24.335 − 69 =
25. 25.581 − 66 =
26. 26.362 − 79 =
27. 27.317 − 59 =
28. 28.459 − 78 =
29. 29.355 − 57 =
30. 30.386 − 98 =
31. 31.347 − 79 =
32. 32.478 − 26 =
33. 33.412 − 58 =
34. 34.184 − 37 =
35. 35.105 − 69 =
36. 36.247 − 99 =
37. 37.184 − 57 =
38. 38.308 − 79 =
39. 39.493 − 87 =
40. 40.376 − 67 =

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