Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 307 · 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. 1.192 − 86 =
2. 2.385 − 66 =
3. 3.402 − 38 =
4. 4.134 − 28 =
5. 5.91 − 17 =
6. 6.158 − 27 =
7. 7.150 − 66 =
8. 8.466 − 56 =
9. 9.229 − 39 =
10. 10.189 − 16 =
11. 11.284 − 96 =
12. 12.209 − 88 =
13. 13.414 − 88 =
14. 14.174 − 38 =
15. 15.280 − 17 =
16. 16.158 − 57 =
17. 17.407 − 46 =
18. 18.510 − 39 =
19. 19.511 − 38 =
20. 20.373 − 48 =
21. 21.310 − 37 =
22. 22.98 − 16 =
23. 23.63 − 27 =
24. 24.207 − 97 =
25. 25.299 − 66 =
26. 26.442 − 17 =
27. 27.227 − 27 =
28. 28.94 − 26 =
29. 29.226 − 49 =
30. 30.264 − 39 =
31. 31.173 − 77 =
32. 32.387 − 36 =
33. 33.531 − 97 =
34. 34.190 − 26 =
35. 35.432 − 17 =
36. 36.239 − 16 =
37. 37.595 − 28 =
38. 38.143 − 17 =
39. 39.591 − 47 =
40. 40.434 − 66 =

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