1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 168 · 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. 1.198 + 891 =
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
3. 3.Take 108. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
6. 6.495 + 594 =
7. 7.891 + 198 =
8. 8.594 + 495 =
9. 9.792 + 297 =
10. 10.Do the 1089 trick with 876: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.693 + 396 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
13. 13.Take 953. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 519. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 911: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 169: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 551. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.396 + 693 =
20. 20.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 367: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 448: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 658. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 543: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 800. 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 2. What is that number?
27. 27.Take 378. 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 6. What is that number?
29. 29.Take 217. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
33. 33.Take 338. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 835: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 926: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 134. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 250: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 349: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?

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