Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 692 · 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. 1.505 − 18 =
2. 2.369 − 98 =
3. 3.103 − 26 =
4. 4.395 − 19 =
5. 5.335 − 98 =
6. 6.179 − 17 =
7. 7.289 − 26 =
8. 8.332 − 66 =
9. 9.443 − 79 =
10. 10.229 − 59 =
11. 11.331 − 37 =
12. 12.258 − 37 =
13. 13.215 − 28 =
14. 14.334 − 26 =
15. 15.514 − 77 =
16. 16.334 − 86 =
17. 17.114 − 18 =
18. 18.145 − 37 =
19. 19.286 − 97 =
20. 20.498 − 67 =
21. 21.436 − 19 =
22. 22.302 − 66 =
23. 23.339 − 76 =
24. 24.587 − 48 =
25. 25.231 − 57 =
26. 26.83 − 16 =
27. 27.422 − 36 =
28. 28.173 − 38 =
29. 29.535 − 96 =
30. 30.411 − 38 =
31. 31.451 − 57 =
32. 32.357 − 77 =
33. 33.243 − 97 =
34. 34.542 − 19 =
35. 35.67 − 16 =
36. 36.306 − 37 =
37. 37.273 − 28 =
38. 38.181 − 17 =
39. 39.443 − 87 =
40. 40.173 − 86 =

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