1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 218 · 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 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.Do the 1089 trick with 173: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.495 + 594 =
5. 5.891 + 198 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.Do the 1089 trick with 380: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
9. 9.198 + 891 =
10. 10.396 + 693 =
11. 11.Do the 1089 trick with 862: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 834: 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 6. What is that number?
15. 15.Take 844. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 612. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
19. 19.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.693 + 396 =
21. 21.Take 476. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 259. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 916. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 712. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 466. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 680. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
31. 31.Take 165. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 693. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.594 + 495 =
34. 34.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 906: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 804. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.792 + 297 =
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
40. 40.Do the 1089 trick with 987: reverse and subtract, then reverse that answer and add. What do you get?

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