1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 368 · 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 113. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.693 + 396 =
3. 3.Do the 1089 trick with 399: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 980. 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 3. What is that number?
6. 6.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 503: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 116. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 218: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 871: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 401. 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 2. What is that number?
15. 15.Do the 1089 trick with 386: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 973: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
18. 18.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 914: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.396 + 693 =
22. 22.Take 902. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 664: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 310. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.594 + 495 =
27. 27.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 851. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
32. 32.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 461. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 247: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.792 + 297 =
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
39. 39.Take 765. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.297 + 792 =

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