Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 100 · 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. 1.351 − 96 =
2. 2.207 − 27 =
3. 3.160 − 56 =
4. 4.530 − 17 =
5. 5.163 − 89 =
6. 6.441 − 89 =
7. 7.274 − 36 =
8. 8.359 − 36 =
9. 9.534 − 19 =
10. 10.593 − 37 =
11. 11.565 − 97 =
12. 12.250 − 29 =
13. 13.135 − 59 =
14. 14.481 − 49 =
15. 15.526 − 48 =
16. 16.300 − 96 =
17. 17.172 − 77 =
18. 18.212 − 59 =
19. 19.463 − 26 =
20. 20.60 − 58 =
21. 21.142 − 67 =
22. 22.542 − 37 =
23. 23.498 − 96 =
24. 24.187 − 27 =
25. 25.270 − 66 =
26. 26.86 − 26 =
27. 27.74 − 19 =
28. 28.158 − 88 =
29. 29.230 − 37 =
30. 30.505 − 89 =
31. 31.424 − 47 =
32. 32.150 − 68 =
33. 33.287 − 88 =
34. 34.234 − 96 =
35. 35.163 − 77 =
36. 36.246 − 67 =
37. 37.463 − 66 =
38. 38.367 − 96 =
39. 39.313 − 26 =
40. 40.491 − 69 =

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