Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 551 · 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. 1.185 − 27 =
2. 2.173 − 97 =
3. 3.269 − 49 =
4. 4.519 − 57 =
5. 5.294 − 27 =
6. 6.164 − 68 =
7. 7.447 − 96 =
8. 8.144 − 78 =
9. 9.389 − 19 =
10. 10.567 − 37 =
11. 11.167 − 87 =
12. 12.323 − 67 =
13. 13.179 − 88 =
14. 14.569 − 88 =
15. 15.383 − 49 =
16. 16.369 − 27 =
17. 17.345 − 99 =
18. 18.138 − 47 =
19. 19.273 − 37 =
20. 20.582 − 89 =
21. 21.321 − 96 =
22. 22.186 − 18 =
23. 23.127 − 58 =
24. 24.393 − 39 =
25. 25.216 − 97 =
26. 26.475 − 79 =
27. 27.104 − 67 =
28. 28.294 − 28 =
29. 29.99 − 89 =
30. 30.216 − 27 =
31. 31.121 − 17 =
32. 32.399 − 89 =
33. 33.455 − 39 =
34. 34.106 − 69 =
35. 35.257 − 76 =
36. 36.495 − 29 =
37. 37.247 − 58 =
38. 38.589 − 27 =
39. 39.146 − 47 =
40. 40.158 − 39 =

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