Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 753 · 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. 1.356 − 87 =
2. 2.505 − 57 =
3. 3.149 − 48 =
4. 4.184 − 76 =
5. 5.251 − 28 =
6. 6.194 − 27 =
7. 7.433 − 39 =
8. 8.372 − 69 =
9. 9.108 − 79 =
10. 10.121 − 89 =
11. 11.216 − 66 =
12. 12.126 − 97 =
13. 13.129 − 78 =
14. 14.123 − 57 =
15. 15.177 − 56 =
16. 16.282 − 78 =
17. 17.209 − 99 =
18. 18.445 − 69 =
19. 19.113 − 19 =
20. 20.119 − 57 =
21. 21.419 − 19 =
22. 22.587 − 38 =
23. 23.185 − 78 =
24. 24.466 − 47 =
25. 25.594 − 76 =
26. 26.375 − 48 =
27. 27.183 − 86 =
28. 28.253 − 19 =
29. 29.85 − 66 =
30. 30.456 − 46 =
31. 31.536 − 76 =
32. 32.216 − 36 =
33. 33.303 − 76 =
34. 34.132 − 56 =
35. 35.330 − 96 =
36. 36.506 − 57 =
37. 37.198 − 98 =
38. 38.85 − 78 =
39. 39.198 − 98 =
40. 40.241 − 88 =

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