1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 261 · 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 7. What is that number?
2. 2.Do the 1089 trick with 119: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
5. 5.297 + 792 =
6. 6.Take 650. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.198 + 891 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
9. 9.Do the 1089 trick with 538: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.891 + 198 =
11. 11.Do the 1089 trick with 467: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 804: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 713. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 264: 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 8. What is that number?
16. 16.Take 772. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.396 + 693 =
19. 19.Do the 1089 trick with 814: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.594 + 495 =
21. 21.Do the 1089 trick with 128: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 500. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 395: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 906. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 177: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 359. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
30. 30.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 698. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.495 + 594 =
33. 33.Do the 1089 trick with 416: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 902: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 812. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
39. 39.Do the 1089 trick with 380: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?

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