1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 483 · 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 842: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 753. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.198 + 891 =
4. 4.Do the 1089 trick with 678: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 902: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 540: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
11. 11.Take 634. 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 6. What is that number?
13. 13.693 + 396 =
14. 14.Take 599. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 714. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.297 + 792 =
17. 17.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.594 + 495 =
19. 19.Take 400. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.792 + 297 =
21. 21.Take 619. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 478: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 337: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 422. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 408: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 290: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
29. 29.Take 620. 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 4. What is that number?
31. 31.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 279: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 962: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 128. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 205: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 220. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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