1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 445 · 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 2. What is that number?
2. 2.Take 619. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
4. 4.Do the 1089 trick with 369: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.396 + 693 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
7. 7.792 + 297 =
8. 8.Do the 1089 trick with 456: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 114. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 457. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 890. 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 1. What is that number?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
15. 15.Take 680. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
17. 17.Take 961. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 588. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 672: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 350: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 965: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 412. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.297 + 792 =
24. 24.891 + 198 =
25. 25.693 + 396 =
26. 26.Do the 1089 trick with 288: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.594 + 495 =
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
29. 29.Do the 1089 trick with 126: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 219. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 542: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 711: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 653: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 296: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 311. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 739: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 937: reverse and subtract, then reverse that answer and add. What do you get?

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