1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 280 · 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 6. What is that number?
2. 2.Do the 1089 trick with 664: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 990. 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 8. What is that number?
5. 5.198 + 891 =
6. 6.792 + 297 =
7. 7.Take 339. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 624: reverse and subtract, then reverse that answer and add. 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 761. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.297 + 792 =
12. 12.396 + 693 =
13. 13.Take 851. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 286: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 210. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 149. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 732. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 537. 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 4. What is that number?
20. 20.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 651: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.693 + 396 =
23. 23.891 + 198 =
24. 24.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 411: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 856. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.594 + 495 =
28. 28.Do the 1089 trick with 107: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 531: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 156: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
33. 33.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 871. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 603. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 793. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 863: 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 1. What is that number?
39. 39.Take 310. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?

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