1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 777 · 40 questions

The trick (Reverse and subtract): Reverse the number and take the smaller number away from the bigger one. The answer is always one of 198, 297, 396, 495, 594, 693, 792, 891: middle digit 9, first and last digits adding to 9. Reverse that answer and add: you always get 1089.

1. 1.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
2. 2.Take 376. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 652: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 871: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
7. 7.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 902. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.198 + 891 =
11. 11.Take 812. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 428. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.297 + 792 =
15. 15.Do the 1089 trick with 650: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 721: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 813. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
22. 22.Take 794. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 487: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 387: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.693 + 396 =
26. 26.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 761: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.594 + 495 =
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
30. 30.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 906. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 633: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 875. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
35. 35.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 184: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 872. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 611: reverse and subtract, then reverse that answer and add. What do you get?

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