Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 259 · 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. 1.238 − 99 =
2. 2.548 − 39 =
3. 3.421 − 27 =
4. 4.396 − 59 =
5. 5.84 − 26 =
6. 6.319 − 78 =
7. 7.349 − 86 =
8. 8.480 − 26 =
9. 9.449 − 46 =
10. 10.409 − 79 =
11. 11.362 − 36 =
12. 12.126 − 47 =
13. 13.557 − 86 =
14. 14.112 − 89 =
15. 15.218 − 76 =
16. 16.566 − 17 =
17. 17.97 − 29 =
18. 18.437 − 27 =
19. 19.534 − 76 =
20. 20.91 − 58 =
21. 21.274 − 28 =
22. 22.499 − 39 =
23. 23.437 − 37 =
24. 24.284 − 86 =
25. 25.252 − 67 =
26. 26.412 − 36 =
27. 27.368 − 69 =
28. 28.151 − 89 =
29. 29.344 − 47 =
30. 30.171 − 39 =
31. 31.357 − 98 =
32. 32.555 − 36 =
33. 33.362 − 97 =
34. 34.204 − 97 =
35. 35.310 − 29 =
36. 36.355 − 96 =
37. 37.491 − 68 =
38. 38.102 − 97 =
39. 39.288 − 67 =
40. 40.415 − 39 =

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