1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 443 · 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. 1.396 + 693 =
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
3. 3.Take 662. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.891 + 198 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
6. 6.Take 914. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.693 + 396 =
9. 9.594 + 495 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
11. 11.Take 406. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
14. 14.Do the 1089 trick with 284: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 843: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.792 + 297 =
17. 17.198 + 891 =
18. 18.Take 115. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.297 + 792 =
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
22. 22.Take 571. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 461: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
26. 26.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 284. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 411. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 893. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 215. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 467: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 612. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 471. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 118. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 761. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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