1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 726 · 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.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.594 + 495 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
4. 4.Take 289. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 591. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
7. 7.Do the 1089 trick with 510: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 371. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 195. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 721: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
14. 14.Take 873. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.297 + 792 =
17. 17.693 + 396 =
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
19. 19.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
21. 21.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 892. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 852. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.891 + 198 =
27. 27.Take 541. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 650: 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 3. What is that number?
31. 31.Do the 1089 trick with 852: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 185. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 512. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 227. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
36. 36.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 451. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 398: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 811. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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