Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 123 · 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. 1.435 − 38 =
2. 2.116 − 69 =
3. 3.308 − 26 =
4. 4.63 − 57 =
5. 5.186 − 96 =
6. 6.139 − 17 =
7. 7.448 − 69 =
8. 8.458 − 66 =
9. 9.471 − 36 =
10. 10.138 − 69 =
11. 11.353 − 79 =
12. 12.164 − 59 =
13. 13.148 − 59 =
14. 14.475 − 37 =
15. 15.177 − 87 =
16. 16.179 − 27 =
17. 17.106 − 18 =
18. 18.535 − 48 =
19. 19.535 − 87 =
20. 20.530 − 18 =
21. 21.117 − 96 =
22. 22.439 − 97 =
23. 23.298 − 46 =
24. 24.543 − 36 =
25. 25.181 − 97 =
26. 26.151 − 88 =
27. 27.243 − 27 =
28. 28.298 − 46 =
29. 29.536 − 58 =
30. 30.264 − 78 =
31. 31.230 − 79 =
32. 32.258 − 47 =
33. 33.476 − 86 =
34. 34.434 − 39 =
35. 35.284 − 46 =
36. 36.121 − 87 =
37. 37.291 − 59 =
38. 38.361 − 19 =
39. 39.545 − 59 =
40. 40.507 − 18 =

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