1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 194 · 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 328. 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 5. What is that number?
3. 3.Do the 1089 trick with 833: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.297 + 792 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.198 + 891 =
9. 9.Do the 1089 trick with 957: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 644. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 804. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.891 + 198 =
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
18. 18.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 368. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 845: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 187: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 896. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 779. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.495 + 594 =
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
27. 27.Take 892. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.594 + 495 =
29. 29.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 369. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 567: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 300. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 167. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 916. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 499. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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