1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 146 · 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 1. What is that number?
2. 2.Do the 1089 trick with 854: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.Do the 1089 trick with 328: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
6. 6.Take 375. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.792 + 297 =
9. 9.Do the 1089 trick with 814: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 855. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 597. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.396 + 693 =
13. 13.198 + 891 =
14. 14.Do the 1089 trick with 905: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
16. 16.Take 917. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 379. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.297 + 792 =
19. 19.Take 389. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 147. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 699: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.891 + 198 =
23. 23.Do the 1089 trick with 539: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 441: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
26. 26.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
28. 28.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 183. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 851: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 734: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 804: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 149. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 482: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 145. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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