1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 190 · 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 781. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 855. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.792 + 297 =
4. 4.Take 319. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 357. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 640: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 643: reverse and subtract, then reverse that answer and add. What do you get?
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 903: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 400: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 175: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 963: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
14. 14.Take 299. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.693 + 396 =
16. 16.Take 719. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 250: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 902. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 961. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
22. 22.Take 811. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 926: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.891 + 198 =
25. 25.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 426. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.594 + 495 =
28. 28.297 + 792 =
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
30. 30.Do the 1089 trick with 843: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 419: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.495 + 594 =
33. 33.396 + 693 =
34. 34.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 750: 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 794. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 690: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 375: reverse and subtract, then reverse that answer and add. What do you get?

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