Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 127 · 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. 1.429 − 47 =
2. 2.581 − 97 =
3. 3.416 − 18 =
4. 4.211 − 79 =
5. 5.136 − 88 =
6. 6.75 − 47 =
7. 7.548 − 89 =
8. 8.65 − 38 =
9. 9.396 − 66 =
10. 10.441 − 46 =
11. 11.105 − 37 =
12. 12.113 − 37 =
13. 13.402 − 69 =
14. 14.223 − 18 =
15. 15.534 − 69 =
16. 16.420 − 18 =
17. 17.550 − 17 =
18. 18.593 − 56 =
19. 19.387 − 27 =
20. 20.478 − 99 =
21. 21.438 − 46 =
22. 22.472 − 98 =
23. 23.202 − 68 =
24. 24.241 − 16 =
25. 25.119 − 39 =
26. 26.283 − 59 =
27. 27.466 − 17 =
28. 28.462 − 97 =
29. 29.401 − 39 =
30. 30.387 − 37 =
31. 31.132 − 16 =
32. 32.375 − 17 =
33. 33.362 − 28 =
34. 34.588 − 37 =
35. 35.223 − 59 =
36. 36.111 − 67 =
37. 37.331 − 87 =
38. 38.527 − 37 =
39. 39.423 − 58 =
40. 40.150 − 46 =

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