1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 493 · 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 5. What is that number?
2. 2.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.Do the 1089 trick with 246: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 662: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 338: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.693 + 396 =
9. 9.396 + 693 =
10. 10.Do the 1089 trick with 618: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 530. 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 8. What is that number?
13. 13.297 + 792 =
14. 14.Do the 1089 trick with 369: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
16. 16.Do the 1089 trick with 803: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 177: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 791. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 762: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
22. 22.Take 133. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 923: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 125: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.495 + 594 =
27. 27.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 891: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.594 + 495 =
30. 30.Take 966. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 597. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 299: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 380. 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 4. What is that number?
37. 37.Take 924. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 913: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 991. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 602. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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