Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 35 · 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. 1.82 − 56 =
2. 2.525 − 17 =
3. 3.546 − 36 =
4. 4.192 − 96 =
5. 5.62 − 46 =
6. 6.425 − 56 =
7. 7.536 − 88 =
8. 8.282 − 58 =
9. 9.131 − 87 =
10. 10.126 − 39 =
11. 11.545 − 76 =
12. 12.251 − 99 =
13. 13.348 − 26 =
14. 14.198 − 47 =
15. 15.519 − 67 =
16. 16.99 − 66 =
17. 17.129 − 37 =
18. 18.190 − 38 =
19. 19.347 − 29 =
20. 20.177 − 28 =
21. 21.155 − 46 =
22. 22.180 − 97 =
23. 23.536 − 26 =
24. 24.137 − 76 =
25. 25.165 − 98 =
26. 26.104 − 46 =
27. 27.281 − 18 =
28. 28.222 − 38 =
29. 29.160 − 69 =
30. 30.500 − 48 =
31. 31.245 − 38 =
32. 32.176 − 58 =
33. 33.527 − 76 =
34. 34.366 − 96 =
35. 35.138 − 17 =
36. 36.561 − 46 =
37. 37.405 − 36 =
38. 38.227 − 49 =
39. 39.205 − 99 =
40. 40.571 − 86 =

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