Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 19 · 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. 1.96 − 56 =
2. 2.136 − 39 =
3. 3.515 − 97 =
4. 4.151 − 77 =
5. 5.453 − 29 =
6. 6.525 − 58 =
7. 7.156 − 66 =
8. 8.326 − 29 =
9. 9.474 − 19 =
10. 10.555 − 89 =
11. 11.209 − 66 =
12. 12.149 − 97 =
13. 13.99 − 69 =
14. 14.289 − 38 =
15. 15.126 − 47 =
16. 16.195 − 87 =
17. 17.507 − 38 =
18. 18.252 − 58 =
19. 19.66 − 27 =
20. 20.167 − 88 =
21. 21.195 − 19 =
22. 22.456 − 68 =
23. 23.149 − 57 =
24. 24.367 − 18 =
25. 25.378 − 69 =
26. 26.157 − 98 =
27. 27.85 − 46 =
28. 28.169 − 16 =
29. 29.471 − 39 =
30. 30.219 − 36 =
31. 31.125 − 56 =
32. 32.154 − 68 =
33. 33.297 − 28 =
34. 34.217 − 86 =
35. 35.381 − 49 =
36. 36.557 − 46 =
37. 37.457 − 67 =
38. 38.275 − 17 =
39. 39.332 − 39 =
40. 40.184 − 86 =

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