Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 365 · 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. 1.102 − 76 =
2. 2.456 − 78 =
3. 3.185 − 19 =
4. 4.458 − 99 =
5. 5.161 − 28 =
6. 6.492 − 79 =
7. 7.290 − 77 =
8. 8.148 − 46 =
9. 9.245 − 57 =
10. 10.485 − 47 =
11. 11.157 − 58 =
12. 12.189 − 96 =
13. 13.257 − 18 =
14. 14.211 − 46 =
15. 15.344 − 28 =
16. 16.504 − 58 =
17. 17.480 − 46 =
18. 18.156 − 89 =
19. 19.334 − 98 =
20. 20.54 − 16 =
21. 21.148 − 56 =
22. 22.166 − 77 =
23. 23.402 − 16 =
24. 24.510 − 29 =
25. 25.92 − 27 =
26. 26.275 − 38 =
27. 27.335 − 58 =
28. 28.527 − 79 =
29. 29.160 − 56 =
30. 30.383 − 87 =
31. 31.277 − 26 =
32. 32.376 − 26 =
33. 33.577 − 56 =
34. 34.268 − 76 =
35. 35.242 − 19 =
36. 36.90 − 56 =
37. 37.372 − 49 =
38. 38.598 − 67 =
39. 39.79 − 18 =
40. 40.179 − 89 =

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