Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 214 · 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. 1.86 − 19 =
2. 2.76 − 68 =
3. 3.219 − 16 =
4. 4.82 − 16 =
5. 5.163 − 56 =
6. 6.520 − 79 =
7. 7.596 − 89 =
8. 8.531 − 28 =
9. 9.375 − 46 =
10. 10.514 − 38 =
11. 11.484 − 16 =
12. 12.283 − 76 =
13. 13.485 − 86 =
14. 14.228 − 27 =
15. 15.350 − 69 =
16. 16.440 − 86 =
17. 17.118 − 56 =
18. 18.281 − 47 =
19. 19.321 − 17 =
20. 20.196 − 77 =
21. 21.144 − 98 =
22. 22.168 − 48 =
23. 23.363 − 69 =
24. 24.384 − 36 =
25. 25.303 − 98 =
26. 26.131 − 17 =
27. 27.478 − 49 =
28. 28.266 − 36 =
29. 29.474 − 89 =
30. 30.459 − 56 =
31. 31.434 − 97 =
32. 32.246 − 28 =
33. 33.187 − 79 =
34. 34.59 − 48 =
35. 35.115 − 58 =
36. 36.302 − 29 =
37. 37.163 − 99 =
38. 38.476 − 28 =
39. 39.93 − 86 =
40. 40.569 − 36 =

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