Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 369 · 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. 1.169 − 36 =
2. 2.483 − 96 =
3. 3.395 − 88 =
4. 4.223 − 49 =
5. 5.248 − 46 =
6. 6.249 − 99 =
7. 7.129 − 79 =
8. 8.153 − 69 =
9. 9.463 − 16 =
10. 10.523 − 27 =
11. 11.344 − 57 =
12. 12.157 − 97 =
13. 13.177 − 59 =
14. 14.296 − 29 =
15. 15.266 − 36 =
16. 16.579 − 37 =
17. 17.140 − 67 =
18. 18.187 − 27 =
19. 19.319 − 16 =
20. 20.543 − 78 =
21. 21.158 − 28 =
22. 22.62 − 37 =
23. 23.403 − 27 =
24. 24.87 − 38 =
25. 25.301 − 19 =
26. 26.474 − 48 =
27. 27.345 − 66 =
28. 28.101 − 26 =
29. 29.318 − 36 =
30. 30.359 − 17 =
31. 31.587 − 76 =
32. 32.203 − 18 =
33. 33.480 − 26 =
34. 34.430 − 16 =
35. 35.420 − 78 =
36. 36.408 − 76 =
37. 37.564 − 36 =
38. 38.561 − 89 =
39. 39.451 − 76 =
40. 40.452 − 46 =

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