Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 504 · 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. 1.245 − 86 =
2. 2.163 − 97 =
3. 3.105 − 66 =
4. 4.557 − 97 =
5. 5.220 − 88 =
6. 6.80 − 68 =
7. 7.186 − 26 =
8. 8.305 − 38 =
9. 9.465 − 58 =
10. 10.238 − 26 =
11. 11.162 − 86 =
12. 12.102 − 89 =
13. 13.528 − 88 =
14. 14.257 − 28 =
15. 15.194 − 19 =
16. 16.420 − 27 =
17. 17.554 − 27 =
18. 18.312 − 76 =
19. 19.236 − 27 =
20. 20.584 − 67 =
21. 21.242 − 56 =
22. 22.494 − 19 =
23. 23.513 − 26 =
24. 24.170 − 67 =
25. 25.392 − 99 =
26. 26.568 − 46 =
27. 27.473 − 19 =
28. 28.519 − 48 =
29. 29.554 − 88 =
30. 30.248 − 79 =
31. 31.156 − 98 =
32. 32.396 − 76 =
33. 33.287 − 27 =
34. 34.532 − 86 =
35. 35.121 − 69 =
36. 36.312 − 67 =
37. 37.95 − 56 =
38. 38.292 − 99 =
39. 39.258 − 37 =
40. 40.132 − 69 =

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