Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 731 · 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. 1.57 − 38 =
2. 2.81 − 46 =
3. 3.457 − 27 =
4. 4.564 − 28 =
5. 5.422 − 66 =
6. 6.295 − 59 =
7. 7.441 − 57 =
8. 8.203 − 37 =
9. 9.434 − 39 =
10. 10.318 − 17 =
11. 11.118 − 97 =
12. 12.454 − 56 =
13. 13.233 − 49 =
14. 14.160 − 26 =
15. 15.468 − 79 =
16. 16.109 − 99 =
17. 17.348 − 87 =
18. 18.183 − 46 =
19. 19.500 − 58 =
20. 20.93 − 39 =
21. 21.556 − 18 =
22. 22.579 − 37 =
23. 23.328 − 46 =
24. 24.331 − 69 =
25. 25.382 − 86 =
26. 26.553 − 76 =
27. 27.182 − 56 =
28. 28.407 − 26 =
29. 29.453 − 68 =
30. 30.217 − 56 =
31. 31.179 − 26 =
32. 32.266 − 79 =
33. 33.219 − 16 =
34. 34.548 − 86 =
35. 35.130 − 98 =
36. 36.316 − 28 =
37. 37.458 − 47 =
38. 38.579 − 17 =
39. 39.498 − 98 =
40. 40.390 − 99 =

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