Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 950 · 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. 1.477 − 76 =
2. 2.448 − 67 =
3. 3.126 − 38 =
4. 4.331 − 96 =
5. 5.347 − 98 =
6. 6.118 − 89 =
7. 7.82 − 28 =
8. 8.548 − 46 =
9. 9.128 − 98 =
10. 10.135 − 29 =
11. 11.105 − 96 =
12. 12.93 − 57 =
13. 13.390 − 46 =
14. 14.391 − 38 =
15. 15.493 − 36 =
16. 16.454 − 66 =
17. 17.380 − 19 =
18. 18.583 − 36 =
19. 19.135 − 27 =
20. 20.121 − 19 =
21. 21.259 − 58 =
22. 22.135 − 79 =
23. 23.270 − 99 =
24. 24.155 − 79 =
25. 25.401 − 28 =
26. 26.266 − 86 =
27. 27.426 − 77 =
28. 28.521 − 68 =
29. 29.596 − 88 =
30. 30.239 − 48 =
31. 31.241 − 18 =
32. 32.510 − 97 =
33. 33.101 − 96 =
34. 34.59 − 16 =
35. 35.238 − 18 =
36. 36.531 − 37 =
37. 37.153 − 69 =
38. 38.392 − 76 =
39. 39.301 − 78 =
40. 40.479 − 59 =

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