Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 952 · 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. 1.180 − 57 =
2. 2.446 − 18 =
3. 3.448 − 38 =
4. 4.242 − 69 =
5. 5.583 − 96 =
6. 6.156 − 38 =
7. 7.246 − 98 =
8. 8.192 − 98 =
9. 9.472 − 56 =
10. 10.141 − 98 =
11. 11.571 − 29 =
12. 12.384 − 28 =
13. 13.157 − 67 =
14. 14.72 − 59 =
15. 15.80 − 49 =
16. 16.179 − 29 =
17. 17.161 − 26 =
18. 18.357 − 86 =
19. 19.137 − 86 =
20. 20.174 − 77 =
21. 21.469 − 38 =
22. 22.79 − 56 =
23. 23.285 − 66 =
24. 24.201 − 46 =
25. 25.223 − 49 =
26. 26.394 − 86 =
27. 27.468 − 89 =
28. 28.548 − 57 =
29. 29.180 − 98 =
30. 30.123 − 36 =
31. 31.360 − 36 =
32. 32.140 − 67 =
33. 33.161 − 26 =
34. 34.381 − 96 =
35. 35.225 − 46 =
36. 36.599 − 77 =
37. 37.446 − 77 =
38. 38.550 − 46 =
39. 39.340 − 47 =
40. 40.104 − 29 =

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