Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 60 · 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. 1.418 − 47 =
2. 2.447 − 57 =
3. 3.484 − 98 =
4. 4.573 − 76 =
5. 5.504 − 18 =
6. 6.517 − 29 =
7. 7.284 − 88 =
8. 8.331 − 17 =
9. 9.435 − 18 =
10. 10.478 − 96 =
11. 11.380 − 56 =
12. 12.179 − 37 =
13. 13.563 − 67 =
14. 14.102 − 97 =
15. 15.151 − 87 =
16. 16.501 − 46 =
17. 17.430 − 38 =
18. 18.137 − 66 =
19. 19.178 − 78 =
20. 20.107 − 68 =
21. 21.158 − 68 =
22. 22.203 − 98 =
23. 23.305 − 27 =
24. 24.558 − 76 =
25. 25.347 − 68 =
26. 26.478 − 89 =
27. 27.381 − 16 =
28. 28.231 − 37 =
29. 29.312 − 38 =
30. 30.533 − 96 =
31. 31.355 − 49 =
32. 32.221 − 78 =
33. 33.66 − 37 =
34. 34.578 − 76 =
35. 35.300 − 86 =
36. 36.264 − 99 =
37. 37.509 − 69 =
38. 38.512 − 57 =
39. 39.306 − 28 =
40. 40.386 − 38 =

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