1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 601 · 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 3. What is that number?
2. 2.Do the 1089 trick with 572: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
4. 4.Take 377. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.396 + 693 =
6. 6.Do the 1089 trick with 992: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 254. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 533. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.693 + 396 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
11. 11.Take 491. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 125: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 996. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 805. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 274: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
17. 17.Do the 1089 trick with 380: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.594 + 495 =
19. 19.Do the 1089 trick with 319: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 401: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 904: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 744. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
25. 25.Take 753. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 795. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.198 + 891 =
28. 28.Do the 1089 trick with 502: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. 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.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 299: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 127. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 351. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.792 + 297 =
37. 37.Take 631. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 136: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 688: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 381: reverse and subtract, then reverse that answer and add. What do you get?

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