Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 988 · 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. 1.563 − 79 =
2. 2.134 − 49 =
3. 3.226 − 49 =
4. 4.92 − 57 =
5. 5.510 − 59 =
6. 6.597 − 28 =
7. 7.513 − 78 =
8. 8.178 − 38 =
9. 9.530 − 17 =
10. 10.261 − 19 =
11. 11.128 − 37 =
12. 12.174 − 46 =
13. 13.223 − 98 =
14. 14.204 − 37 =
15. 15.80 − 79 =
16. 16.190 − 67 =
17. 17.444 − 37 =
18. 18.393 − 37 =
19. 19.87 − 48 =
20. 20.512 − 17 =
21. 21.212 − 29 =
22. 22.407 − 56 =
23. 23.530 − 18 =
24. 24.292 − 97 =
25. 25.92 − 39 =
26. 26.182 − 38 =
27. 27.357 − 79 =
28. 28.70 − 16 =
29. 29.125 − 77 =
30. 30.539 − 49 =
31. 31.213 − 76 =
32. 32.569 − 19 =
33. 33.218 − 57 =
34. 34.463 − 69 =
35. 35.85 − 19 =
36. 36.266 − 59 =
37. 37.525 − 48 =
38. 38.372 − 79 =
39. 39.289 − 97 =
40. 40.562 − 58 =

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