1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 286 · 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. 1.594 + 495 =
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
3. 3.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
5. 5.Do the 1089 trick with 338: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 510. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.297 + 792 =
8. 8.Do the 1089 trick with 246: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.792 + 297 =
11. 11.Do the 1089 trick with 113: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 401: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 844: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 902. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 218. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 914. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 390: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 613: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.198 + 891 =
20. 20.Take 165. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.495 + 594 =
24. 24.Take 269. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 480. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
27. 27.Do the 1089 trick with 386: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 623. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 502: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 239: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 327. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 370. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 874. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 330: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 975: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 225. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 734: reverse and subtract, then reverse that answer and add. What do you get?

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