1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 466 · 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.Do the 1089 trick with 441: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
3. 3.Take 311. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.198 + 891 =
5. 5.Take 422. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
7. 7.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 144: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 440: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
12. 12.Take 892. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
15. 15.Take 744. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.594 + 495 =
17. 17.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 389: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.396 + 693 =
20. 20.297 + 792 =
21. 21.Take 987. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 371. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.792 + 297 =
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
25. 25.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
27. 27.Take 482. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.693 + 396 =
29. 29.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 184. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 761: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 985. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 416: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 249. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 590. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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