1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 509 · 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.Take 633. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
5. 5.297 + 792 =
6. 6.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 491: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.693 + 396 =
10. 10.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 329: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.792 + 297 =
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
14. 14.Take 592. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 239: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 491. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 913. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
20. 20.891 + 198 =
21. 21.Take 330. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
25. 25.Take 831. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 824: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 380. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 729. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.495 + 594 =
32. 32.Do the 1089 trick with 781: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 895. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
35. 35.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. 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 430. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 169: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 249: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 947: reverse and subtract, then reverse that answer and add. What do you get?

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