1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 816 · 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 2. What is that number?
2. 2.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.495 + 594 =
5. 5.Take 916. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 125: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 623. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 781. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 659: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.891 + 198 =
12. 12.Do the 1089 trick with 194: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 114: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
15. 15.792 + 297 =
16. 16.198 + 891 =
17. 17.Do the 1089 trick with 750: 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 3. What is that number?
19. 19.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
21. 21.Take 985. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 451. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 135. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.297 + 792 =
26. 26.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 905. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 205. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
32. 32.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 114. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 533: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 680. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 832. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 946. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 883. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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