1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 504 · 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 806. 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 8. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
5. 5.Do the 1089 trick with 136: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 791. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.297 + 792 =
9. 9.495 + 594 =
10. 10.Take 815. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 410. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
13. 13.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 611: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 438. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.891 + 198 =
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
18. 18.693 + 396 =
19. 19.Do the 1089 trick with 701: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.198 + 891 =
21. 21.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 158. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 651. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 198. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 340. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 570: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 640: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 502: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 652: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 987: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 350. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 560: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 215. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.594 + 495 =
38. 38.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 723. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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