Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 188 · 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. 1.65 − 49 =
2. 2.258 − 98 =
3. 3.110 − 29 =
4. 4.170 − 96 =
5. 5.346 − 87 =
6. 6.157 − 47 =
7. 7.268 − 96 =
8. 8.105 − 67 =
9. 9.222 − 56 =
10. 10.437 − 46 =
11. 11.158 − 88 =
12. 12.355 − 16 =
13. 13.344 − 39 =
14. 14.222 − 17 =
15. 15.202 − 79 =
16. 16.369 − 48 =
17. 17.179 − 77 =
18. 18.141 − 87 =
19. 19.208 − 37 =
20. 20.457 − 26 =
21. 21.481 − 69 =
22. 22.231 − 28 =
23. 23.113 − 19 =
24. 24.517 − 77 =
25. 25.247 − 89 =
26. 26.292 − 46 =
27. 27.182 − 89 =
28. 28.320 − 18 =
29. 29.263 − 69 =
30. 30.60 − 39 =
31. 31.342 − 78 =
32. 32.512 − 87 =
33. 33.234 − 36 =
34. 34.168 − 38 =
35. 35.291 − 38 =
36. 36.209 − 16 =
37. 37.382 − 29 =
38. 38.512 − 48 =
39. 39.136 − 58 =
40. 40.470 − 88 =

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