Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 997 · 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. 1.85 − 36 =
2. 2.236 − 18 =
3. 3.543 − 68 =
4. 4.286 − 26 =
5. 5.155 − 37 =
6. 6.480 − 96 =
7. 7.503 − 87 =
8. 8.213 − 27 =
9. 9.458 − 66 =
10. 10.386 − 89 =
11. 11.397 − 78 =
12. 12.474 − 88 =
13. 13.59 − 49 =
14. 14.575 − 86 =
15. 15.285 − 17 =
16. 16.586 − 46 =
17. 17.513 − 68 =
18. 18.345 − 77 =
19. 19.226 − 26 =
20. 20.414 − 87 =
21. 21.112 − 16 =
22. 22.184 − 77 =
23. 23.108 − 66 =
24. 24.482 − 67 =
25. 25.512 − 17 =
26. 26.429 − 16 =
27. 27.181 − 16 =
28. 28.110 − 27 =
29. 29.430 − 36 =
30. 30.218 − 77 =
31. 31.491 − 86 =
32. 32.396 − 49 =
33. 33.417 − 29 =
34. 34.215 − 16 =
35. 35.482 − 47 =
36. 36.535 − 98 =
37. 37.471 − 68 =
38. 38.54 − 38 =
39. 39.146 − 37 =
40. 40.269 − 86 =

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