1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 540 · 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 188. 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 4. What is that number?
3. 3.Take 724. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 508: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
6. 6.Do the 1089 trick with 902: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 602: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.297 + 792 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.Take 325. 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 3. What is that number?
12. 12.Do the 1089 trick with 306: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 426. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 852. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 923. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 572. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 239. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
20. 20.Take 154. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.396 + 693 =
22. 22.693 + 396 =
23. 23.594 + 495 =
24. 24.Take 429. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 274. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
28. 28.Take 510. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 598: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 422. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.495 + 594 =
32. 32.Do the 1089 trick with 137: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
34. 34.Do the 1089 trick with 106: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 109: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
37. 37.Take 741. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 895. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.198 + 891 =
40. 40.792 + 297 =

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