Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 15 · 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. 1.177 − 67 =
2. 2.236 − 26 =
3. 3.185 − 87 =
4. 4.564 − 77 =
5. 5.209 − 26 =
6. 6.228 − 67 =
7. 7.486 − 76 =
8. 8.369 − 97 =
9. 9.389 − 86 =
10. 10.341 − 86 =
11. 11.474 − 57 =
12. 12.168 − 57 =
13. 13.181 − 38 =
14. 14.141 − 46 =
15. 15.422 − 17 =
16. 16.131 − 27 =
17. 17.375 − 37 =
18. 18.179 − 18 =
19. 19.361 − 36 =
20. 20.435 − 89 =
21. 21.129 − 57 =
22. 22.510 − 47 =
23. 23.118 − 28 =
24. 24.77 − 19 =
25. 25.497 − 86 =
26. 26.317 − 27 =
27. 27.81 − 28 =
28. 28.255 − 48 =
29. 29.515 − 37 =
30. 30.464 − 66 =
31. 31.160 − 68 =
32. 32.479 − 68 =
33. 33.447 − 66 =
34. 34.164 − 27 =
35. 35.221 − 59 =
36. 36.321 − 47 =
37. 37.566 − 48 =
38. 38.204 − 56 =
39. 39.115 − 88 =
40. 40.290 − 36 =

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