Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 117 · 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. 1.402 − 26 =
2. 2.273 − 78 =
3. 3.457 − 26 =
4. 4.357 − 17 =
5. 5.199 − 37 =
6. 6.287 − 28 =
7. 7.305 − 27 =
8. 8.474 − 47 =
9. 9.91 − 89 =
10. 10.170 − 99 =
11. 11.173 − 97 =
12. 12.236 − 27 =
13. 13.448 − 89 =
14. 14.217 − 98 =
15. 15.468 − 46 =
16. 16.461 − 47 =
17. 17.318 − 36 =
18. 18.476 − 29 =
19. 19.455 − 96 =
20. 20.370 − 67 =
21. 21.356 − 87 =
22. 22.587 − 19 =
23. 23.512 − 47 =
24. 24.486 − 66 =
25. 25.214 − 88 =
26. 26.125 − 76 =
27. 27.80 − 19 =
28. 28.352 − 39 =
29. 29.158 − 77 =
30. 30.313 − 88 =
31. 31.359 − 19 =
32. 32.469 − 96 =
33. 33.589 − 16 =
34. 34.102 − 38 =
35. 35.280 − 56 =
36. 36.510 − 27 =
37. 37.162 − 79 =
38. 38.115 − 77 =
39. 39.163 − 66 =
40. 40.571 − 56 =

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