1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 42 · 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 104. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 624: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.396 + 693 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
5. 5.693 + 396 =
6. 6.792 + 297 =
7. 7.297 + 792 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
9. 9.Take 997. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 540. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 115: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
17. 17.Take 318. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 136: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
20. 20.Do the 1089 trick with 944: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 399: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 198: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 826: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
29. 29.Take 461. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 853. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 781. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
33. 33.Take 577. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.495 + 594 =
35. 35.Take 629. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 953. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
38. 38.Take 825. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 265. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.891 + 198 =

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