Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 241 · 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. 1.583 − 49 =
2. 2.186 − 46 =
3. 3.285 − 36 =
4. 4.346 − 48 =
5. 5.157 − 79 =
6. 6.160 − 48 =
7. 7.86 − 27 =
8. 8.452 − 27 =
9. 9.212 − 76 =
10. 10.563 − 79 =
11. 11.541 − 18 =
12. 12.317 − 77 =
13. 13.384 − 98 =
14. 14.585 − 58 =
15. 15.575 − 87 =
16. 16.442 − 36 =
17. 17.297 − 68 =
18. 18.595 − 48 =
19. 19.490 − 78 =
20. 20.436 − 39 =
21. 21.500 − 17 =
22. 22.266 − 49 =
23. 23.597 − 57 =
24. 24.369 − 66 =
25. 25.116 − 56 =
26. 26.437 − 39 =
27. 27.564 − 79 =
28. 28.274 − 66 =
29. 29.573 − 56 =
30. 30.236 − 49 =
31. 31.78 − 59 =
32. 32.355 − 16 =
33. 33.558 − 77 =
34. 34.445 − 57 =
35. 35.323 − 99 =
36. 36.191 − 27 =
37. 37.569 − 29 =
38. 38.521 − 36 =
39. 39.415 − 99 =
40. 40.117 − 18 =

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