1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 328 · 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 1. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 104. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
6. 6.495 + 594 =
7. 7.Take 411. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 542: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
10. 10.396 + 693 =
11. 11.Do the 1089 trick with 762: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 408. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
14. 14.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 881. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.297 + 792 =
18. 18.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 126: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 360: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 412: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.198 + 891 =
23. 23.Take 218. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.891 + 198 =
25. 25.Do the 1089 trick with 885: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.792 + 297 =
27. 27.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 380. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 608: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 731. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 510: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
35. 35.Take 582. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?

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