Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 46 · 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. 1.151 − 46 =
2. 2.205 − 77 =
3. 3.524 − 99 =
4. 4.478 − 39 =
5. 5.87 − 17 =
6. 6.528 − 66 =
7. 7.569 − 76 =
8. 8.93 − 28 =
9. 9.247 − 29 =
10. 10.320 − 47 =
11. 11.154 − 58 =
12. 12.174 − 97 =
13. 13.194 − 47 =
14. 14.521 − 78 =
15. 15.540 − 38 =
16. 16.294 − 97 =
17. 17.271 − 27 =
18. 18.96 − 86 =
19. 19.326 − 37 =
20. 20.453 − 46 =
21. 21.84 − 26 =
22. 22.323 − 17 =
23. 23.441 − 78 =
24. 24.386 − 97 =
25. 25.153 − 67 =
26. 26.503 − 27 =
27. 27.436 − 86 =
28. 28.124 − 47 =
29. 29.277 − 99 =
30. 30.445 − 76 =
31. 31.310 − 17 =
32. 32.371 − 78 =
33. 33.469 − 69 =
34. 34.536 − 28 =
35. 35.493 − 49 =
36. 36.574 − 37 =
37. 37.172 − 46 =
38. 38.369 − 46 =
39. 39.266 − 57 =
40. 40.413 − 46 =

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