Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 247 · 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. 1.550 − 19 =
2. 2.91 − 37 =
3. 3.105 − 66 =
4. 4.448 − 46 =
5. 5.370 − 97 =
6. 6.308 − 29 =
7. 7.243 − 77 =
8. 8.261 − 27 =
9. 9.124 − 86 =
10. 10.544 − 76 =
11. 11.446 − 98 =
12. 12.116 − 29 =
13. 13.147 − 76 =
14. 14.413 − 68 =
15. 15.121 − 47 =
16. 16.475 − 59 =
17. 17.340 − 66 =
18. 18.528 − 86 =
19. 19.58 − 28 =
20. 20.543 − 67 =
21. 21.96 − 67 =
22. 22.147 − 39 =
23. 23.114 − 79 =
24. 24.164 − 68 =
25. 25.208 − 67 =
26. 26.270 − 59 =
27. 27.344 − 97 =
28. 28.333 − 19 =
29. 29.232 − 68 =
30. 30.491 − 26 =
31. 31.440 − 57 =
32. 32.446 − 47 =
33. 33.66 − 19 =
34. 34.576 − 49 =
35. 35.574 − 66 =
36. 36.316 − 37 =
37. 37.396 − 78 =
38. 38.129 − 96 =
39. 39.245 − 38 =
40. 40.433 − 87 =

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