1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 431 · 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 5. What is that number?
2. 2.Take 872. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
4. 4.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.594 + 495 =
6. 6.297 + 792 =
7. 7.792 + 297 =
8. 8.Do the 1089 trick with 411: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
10. 10.Take 608. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 537. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
13. 13.693 + 396 =
14. 14.495 + 594 =
15. 15.198 + 891 =
16. 16.Do the 1089 trick with 446: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 661. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 188: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 791: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 956. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 366: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 236: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.396 + 693 =
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
26. 26.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
28. 28.Take 385. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 387: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 417. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 167: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 863. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 310: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 348: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 509: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 496. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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