Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 661 · 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. 1.219 − 18 =
2. 2.448 − 48 =
3. 3.143 − 77 =
4. 4.160 − 48 =
5. 5.242 − 89 =
6. 6.593 − 89 =
7. 7.550 − 69 =
8. 8.467 − 26 =
9. 9.560 − 36 =
10. 10.537 − 86 =
11. 11.263 − 76 =
12. 12.217 − 28 =
13. 13.344 − 18 =
14. 14.131 − 78 =
15. 15.278 − 58 =
16. 16.440 − 89 =
17. 17.580 − 66 =
18. 18.497 − 48 =
19. 19.454 − 26 =
20. 20.103 − 19 =
21. 21.505 − 89 =
22. 22.151 − 98 =
23. 23.396 − 77 =
24. 24.222 − 77 =
25. 25.64 − 47 =
26. 26.183 − 16 =
27. 27.162 − 27 =
28. 28.124 − 87 =
29. 29.451 − 87 =
30. 30.481 − 97 =
31. 31.209 − 27 =
32. 32.515 − 87 =
33. 33.486 − 28 =
34. 34.62 − 17 =
35. 35.410 − 49 =
36. 36.255 − 87 =
37. 37.586 − 86 =
38. 38.158 − 59 =
39. 39.496 − 16 =
40. 40.167 − 79 =

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