Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 459 · 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. 1.245 − 67 =
2. 2.335 − 28 =
3. 3.420 − 36 =
4. 4.570 − 18 =
5. 5.298 − 18 =
6. 6.270 − 49 =
7. 7.435 − 99 =
8. 8.184 − 76 =
9. 9.292 − 18 =
10. 10.244 − 47 =
11. 11.417 − 68 =
12. 12.334 − 68 =
13. 13.563 − 66 =
14. 14.436 − 99 =
15. 15.555 − 77 =
16. 16.563 − 38 =
17. 17.285 − 86 =
18. 18.241 − 57 =
19. 19.70 − 36 =
20. 20.227 − 68 =
21. 21.353 − 58 =
22. 22.172 − 76 =
23. 23.454 − 76 =
24. 24.168 − 19 =
25. 25.76 − 28 =
26. 26.178 − 49 =
27. 27.591 − 56 =
28. 28.287 − 66 =
29. 29.520 − 56 =
30. 30.118 − 97 =
31. 31.104 − 66 =
32. 32.190 − 96 =
33. 33.145 − 89 =
34. 34.577 − 38 =
35. 35.522 − 87 =
36. 36.446 − 16 =
37. 37.333 − 87 =
38. 38.516 − 18 =
39. 39.275 − 49 =
40. 40.320 − 79 =

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