Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 107 · 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. 1.395 − 19 =
2. 2.157 − 19 =
3. 3.340 − 46 =
4. 4.357 − 77 =
5. 5.383 − 86 =
6. 6.590 − 28 =
7. 7.462 − 86 =
8. 8.297 − 86 =
9. 9.514 − 86 =
10. 10.333 − 19 =
11. 11.342 − 66 =
12. 12.168 − 78 =
13. 13.510 − 56 =
14. 14.153 − 99 =
15. 15.543 − 17 =
16. 16.320 − 36 =
17. 17.559 − 79 =
18. 18.320 − 46 =
19. 19.149 − 56 =
20. 20.268 − 39 =
21. 21.547 − 18 =
22. 22.250 − 97 =
23. 23.63 − 16 =
24. 24.323 − 99 =
25. 25.133 − 46 =
26. 26.218 − 57 =
27. 27.164 − 89 =
28. 28.422 − 36 =
29. 29.174 − 47 =
30. 30.222 − 76 =
31. 31.68 − 17 =
32. 32.403 − 36 =
33. 33.390 − 76 =
34. 34.181 − 58 =
35. 35.177 − 37 =
36. 36.496 − 36 =
37. 37.179 − 86 =
38. 38.477 − 66 =
39. 39.303 − 76 =
40. 40.143 − 16 =

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