1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 126 · 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 5. What is that number?
2. 2.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 338: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
5. 5.891 + 198 =
6. 6.693 + 396 =
7. 7.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 209. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 317. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 109. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 397. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 733. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 533. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 376: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
17. 17.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 611: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 269: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 250: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 933. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.396 + 693 =
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
24. 24.Take 410. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.495 + 594 =
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
27. 27.Take 115. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 957: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.594 + 495 =
30. 30.Take 376. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.792 + 297 =
33. 33.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.198 + 891 =
35. 35.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 530: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 210: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
40. 40.Take 117. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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