1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 324 · 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.Do the 1089 trick with 260: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 441. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 569: 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 5. What is that number?
6. 6.Take 215. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.297 + 792 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 531: reverse and subtract, then reverse that answer and add. 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. 13.396 + 693 =
14. 14.693 + 396 =
15. 15.Take 862. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
18. 18.495 + 594 =
19. 19.Do the 1089 trick with 643: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 510: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.594 + 495 =
24. 24.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 591: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 811. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 301: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 743: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 531. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
33. 33.Take 249. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 983: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 194. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 379. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 913. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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