Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 442 · 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. 1.449 − 67 =
2. 2.382 − 89 =
3. 3.511 − 48 =
4. 4.340 − 46 =
5. 5.404 − 39 =
6. 6.114 − 56 =
7. 7.177 − 98 =
8. 8.312 − 27 =
9. 9.555 − 68 =
10. 10.169 − 88 =
11. 11.205 − 29 =
12. 12.202 − 56 =
13. 13.572 − 36 =
14. 14.172 − 79 =
15. 15.328 − 16 =
16. 16.157 − 39 =
17. 17.245 − 19 =
18. 18.372 − 18 =
19. 19.319 − 47 =
20. 20.196 − 57 =
21. 21.286 − 69 =
22. 22.532 − 79 =
23. 23.405 − 17 =
24. 24.292 − 16 =
25. 25.154 − 27 =
26. 26.313 − 19 =
27. 27.488 − 38 =
28. 28.366 − 79 =
29. 29.498 − 27 =
30. 30.225 − 19 =
31. 31.478 − 39 =
32. 32.120 − 29 =
33. 33.428 − 36 =
34. 34.390 − 18 =
35. 35.52 − 38 =
36. 36.240 − 36 =
37. 37.94 − 38 =
38. 38.166 − 88 =
39. 39.290 − 66 =
40. 40.208 − 97 =

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