1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 652 · 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 4. What is that number?
2. 2.297 + 792 =
3. 3.Take 714. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.495 + 594 =
6. 6.396 + 693 =
7. 7.Take 209. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.594 + 495 =
9. 9.Take 188. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.693 + 396 =
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
13. 13.Take 166. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 599. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.891 + 198 =
16. 16.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 790: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 901: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
20. 20.Do the 1089 trick with 963: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 982. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 811. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 387: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 216: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
28. 28.Do the 1089 trick with 436: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 744: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 823: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 207. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.198 + 891 =
35. 35.Take 301. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 124. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
39. 39.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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