Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 261 · 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. 1.304 − 38 =
2. 2.143 − 17 =
3. 3.106 − 79 =
4. 4.545 − 86 =
5. 5.98 − 28 =
6. 6.362 − 58 =
7. 7.379 − 28 =
8. 8.597 − 59 =
9. 9.415 − 47 =
10. 10.103 − 37 =
11. 11.549 − 86 =
12. 12.209 − 48 =
13. 13.202 − 67 =
14. 14.257 − 69 =
15. 15.511 − 26 =
16. 16.155 − 27 =
17. 17.166 − 77 =
18. 18.543 − 46 =
19. 19.94 − 67 =
20. 20.209 − 28 =
21. 21.486 − 89 =
22. 22.520 − 87 =
23. 23.347 − 39 =
24. 24.111 − 37 =
25. 25.407 − 26 =
26. 26.497 − 17 =
27. 27.179 − 87 =
28. 28.281 − 39 =
29. 29.101 − 36 =
30. 30.407 − 56 =
31. 31.543 − 67 =
32. 32.87 − 16 =
33. 33.463 − 78 =
34. 34.413 − 89 =
35. 35.180 − 69 =
36. 36.473 − 47 =
37. 37.455 − 86 =
38. 38.340 − 19 =
39. 39.180 − 46 =
40. 40.498 − 77 =

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