1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 76 · 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 710. 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. 3.594 + 495 =
4. 4.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 289: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 470. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.792 + 297 =
9. 9.Do the 1089 trick with 551: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
12. 12.Take 672. 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 5. What is that number?
14. 14.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
17. 17.891 + 198 =
18. 18.Take 412. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 825: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 896. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 297: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
23. 23.Take 866. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 158. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 925. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 350. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 653. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 930. 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.Take 976. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.198 + 891 =
32. 32.Take 983. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 558: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 375: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
37. 37.Take 429. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 509: reverse and subtract, then reverse that answer and add. What do you get?

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