1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 216 · 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 800. 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. 3.594 + 495 =
4. 4.198 + 891 =
5. 5.Do the 1089 trick with 418: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
8. 8.Do the 1089 trick with 432: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.396 + 693 =
12. 12.Take 147. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 269: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.891 + 198 =
15. 15.Do the 1089 trick with 498: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.792 + 297 =
17. 17.Do the 1089 trick with 183: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
19. 19.Do the 1089 trick with 775: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 790: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 906. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 284. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.693 + 396 =
24. 24.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 976: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.297 + 792 =
28. 28.Take 953. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 907. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 853. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 523. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 327: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
36. 36.Do the 1089 trick with 513: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 803. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 701: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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