Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 662 · 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. 1.294 − 17 =
2. 2.503 − 59 =
3. 3.83 − 58 =
4. 4.545 − 48 =
5. 5.437 − 68 =
6. 6.472 − 39 =
7. 7.300 − 86 =
8. 8.82 − 67 =
9. 9.479 − 66 =
10. 10.413 − 46 =
11. 11.301 − 29 =
12. 12.462 − 69 =
13. 13.525 − 39 =
14. 14.539 − 16 =
15. 15.148 − 46 =
16. 16.303 − 69 =
17. 17.242 − 89 =
18. 18.491 − 27 =
19. 19.482 − 56 =
20. 20.105 − 46 =
21. 21.144 − 18 =
22. 22.442 − 38 =
23. 23.155 − 69 =
24. 24.440 − 26 =
25. 25.266 − 27 =
26. 26.598 − 97 =
27. 27.271 − 68 =
28. 28.203 − 17 =
29. 29.506 − 97 =
30. 30.552 − 78 =
31. 31.226 − 16 =
32. 32.518 − 56 =
33. 33.116 − 38 =
34. 34.170 − 29 =
35. 35.325 − 29 =
36. 36.495 − 38 =
37. 37.130 − 67 =
38. 38.510 − 37 =
39. 39.215 − 26 =
40. 40.202 − 26 =

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