1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 827 · 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 803. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 510. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 724: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 852. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.693 + 396 =
6. 6.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 136. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.396 + 693 =
14. 14.Take 933. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 116. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 492. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
19. 19.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 613: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 871: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.495 + 594 =
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
24. 24.Do the 1089 trick with 560: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 769: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 126. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 784. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
31. 31.594 + 495 =
32. 32.297 + 792 =
33. 33.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 169: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 441. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 466: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 642: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 794: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 681: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 991. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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