Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 44 · 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. 1.148 − 48 =
2. 2.540 − 67 =
3. 3.150 − 69 =
4. 4.565 − 18 =
5. 5.98 − 96 =
6. 6.103 − 58 =
7. 7.168 − 27 =
8. 8.155 − 58 =
9. 9.329 − 56 =
10. 10.433 − 79 =
11. 11.588 − 66 =
12. 12.581 − 97 =
13. 13.574 − 68 =
14. 14.457 − 26 =
15. 15.82 − 26 =
16. 16.451 − 29 =
17. 17.174 − 78 =
18. 18.493 − 87 =
19. 19.169 − 37 =
20. 20.121 − 56 =
21. 21.319 − 97 =
22. 22.380 − 38 =
23. 23.55 − 36 =
24. 24.369 − 18 =
25. 25.508 − 87 =
26. 26.271 − 86 =
27. 27.237 − 47 =
28. 28.297 − 56 =
29. 29.478 − 59 =
30. 30.140 − 26 =
31. 31.374 − 19 =
32. 32.539 − 49 =
33. 33.449 − 48 =
34. 34.283 − 36 =
35. 35.304 − 66 =
36. 36.366 − 19 =
37. 37.527 − 39 =
38. 38.358 − 28 =
39. 39.580 − 78 =
40. 40.257 − 27 =

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