Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 559 · 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. 1.199 − 46 =
2. 2.138 − 17 =
3. 3.227 − 28 =
4. 4.150 − 16 =
5. 5.166 − 99 =
6. 6.342 − 47 =
7. 7.471 − 48 =
8. 8.420 − 77 =
9. 9.331 − 37 =
10. 10.204 − 68 =
11. 11.260 − 76 =
12. 12.358 − 97 =
13. 13.332 − 38 =
14. 14.193 − 16 =
15. 15.55 − 27 =
16. 16.156 − 97 =
17. 17.438 − 19 =
18. 18.511 − 77 =
19. 19.297 − 26 =
20. 20.410 − 76 =
21. 21.453 − 86 =
22. 22.397 − 76 =
23. 23.250 − 16 =
24. 24.221 − 79 =
25. 25.227 − 46 =
26. 26.442 − 78 =
27. 27.187 − 16 =
28. 28.452 − 78 =
29. 29.223 − 16 =
30. 30.117 − 99 =
31. 31.139 − 77 =
32. 32.159 − 99 =
33. 33.144 − 29 =
34. 34.65 − 49 =
35. 35.542 − 18 =
36. 36.138 − 19 =
37. 37.542 − 99 =
38. 38.359 − 16 =
39. 39.562 − 29 =
40. 40.567 − 86 =

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