1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 391 · 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 2. What is that number?
2. 2.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 679. 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 6. What is that number?
5. 5.396 + 693 =
6. 6.594 + 495 =
7. 7.Do the 1089 trick with 926: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.297 + 792 =
12. 12.891 + 198 =
13. 13.Take 391. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 662. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 327. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
17. 17.693 + 396 =
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
19. 19.Take 932. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.495 + 594 =
21. 21.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 402: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 631: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 763. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 401: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
31. 31.Take 229. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 733. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 249. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
37. 37.Do the 1089 trick with 874: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 914: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 538: reverse and subtract, then reverse that answer and add. What do you get?

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