Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 520 · 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. 1.141 − 69 =
2. 2.244 − 89 =
3. 3.160 − 98 =
4. 4.304 − 88 =
5. 5.257 − 26 =
6. 6.285 − 88 =
7. 7.330 − 27 =
8. 8.217 − 78 =
9. 9.568 − 18 =
10. 10.487 − 79 =
11. 11.118 − 17 =
12. 12.399 − 36 =
13. 13.397 − 68 =
14. 14.589 − 96 =
15. 15.104 − 97 =
16. 16.261 − 96 =
17. 17.149 − 37 =
18. 18.180 − 88 =
19. 19.92 − 76 =
20. 20.458 − 59 =
21. 21.250 − 39 =
22. 22.133 − 48 =
23. 23.595 − 18 =
24. 24.294 − 37 =
25. 25.135 − 29 =
26. 26.181 − 37 =
27. 27.238 − 19 =
28. 28.337 − 47 =
29. 29.450 − 58 =
30. 30.358 − 98 =
31. 31.529 − 36 =
32. 32.269 − 99 =
33. 33.423 − 28 =
34. 34.425 − 87 =
35. 35.376 − 18 =
36. 36.438 − 86 =
37. 37.219 − 66 =
38. 38.327 − 49 =
39. 39.156 − 86 =
40. 40.392 − 47 =

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