Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 912 · 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. 1.311 − 19 =
2. 2.440 − 46 =
3. 3.393 − 86 =
4. 4.176 − 96 =
5. 5.393 − 36 =
6. 6.130 − 56 =
7. 7.523 − 76 =
8. 8.223 − 17 =
9. 9.559 − 98 =
10. 10.543 − 98 =
11. 11.94 − 66 =
12. 12.351 − 97 =
13. 13.371 − 27 =
14. 14.571 − 37 =
15. 15.569 − 49 =
16. 16.145 − 99 =
17. 17.503 − 77 =
18. 18.535 − 29 =
19. 19.458 − 77 =
20. 20.121 − 47 =
21. 21.158 − 99 =
22. 22.263 − 56 =
23. 23.520 − 86 =
24. 24.55 − 46 =
25. 25.370 − 99 =
26. 26.90 − 86 =
27. 27.191 − 39 =
28. 28.440 − 58 =
29. 29.152 − 29 =
30. 30.599 − 26 =
31. 31.362 − 26 =
32. 32.226 − 46 =
33. 33.528 − 76 =
34. 34.274 − 46 =
35. 35.449 − 36 =
36. 36.388 − 26 =
37. 37.490 − 78 =
38. 38.85 − 59 =
39. 39.583 − 96 =
40. 40.148 − 47 =

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