1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 485 · 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 7. What is that number?
2. 2.198 + 891 =
3. 3.297 + 792 =
4. 4.Do the 1089 trick with 996: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.792 + 297 =
6. 6.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.396 + 693 =
8. 8.891 + 198 =
9. 9.Take 249. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
11. 11.Take 826. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 235: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
15. 15.Take 974. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 429. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 954. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 513: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 226. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 306. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 962. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 845: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
25. 25.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 497. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 691. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
30. 30.Do the 1089 trick with 651: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
32. 32.Take 613. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 955: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 944: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 578: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 244. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 613: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 371: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 406. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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