Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 212 · 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. 1.75 − 29 =
2. 2.408 − 86 =
3. 3.450 − 68 =
4. 4.274 − 37 =
5. 5.87 − 26 =
6. 6.449 − 36 =
7. 7.164 − 59 =
8. 8.415 − 36 =
9. 9.216 − 57 =
10. 10.295 − 27 =
11. 11.284 − 76 =
12. 12.421 − 46 =
13. 13.200 − 79 =
14. 14.402 − 98 =
15. 15.431 − 17 =
16. 16.567 − 98 =
17. 17.126 − 49 =
18. 18.504 − 57 =
19. 19.318 − 99 =
20. 20.326 − 48 =
21. 21.446 − 16 =
22. 22.202 − 97 =
23. 23.89 − 39 =
24. 24.261 − 57 =
25. 25.188 − 37 =
26. 26.347 − 59 =
27. 27.528 − 87 =
28. 28.305 − 69 =
29. 29.288 − 78 =
30. 30.167 − 79 =
31. 31.194 − 36 =
32. 32.159 − 89 =
33. 33.135 − 98 =
34. 34.588 − 87 =
35. 35.154 − 69 =
36. 36.129 − 37 =
37. 37.249 − 47 =
38. 38.106 − 28 =
39. 39.327 − 97 =
40. 40.93 − 18 =

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