1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 498 · 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.Do the 1089 trick with 419: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
3. 3.Take 750. 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 6. What is that number?
5. 5.693 + 396 =
6. 6.Do the 1089 trick with 124: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
8. 8.891 + 198 =
9. 9.Take 996. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
11. 11.Take 960. 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 3. What is that number?
13. 13.Do the 1089 trick with 491: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 388: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 633: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 619: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
18. 18.Do the 1089 trick with 128: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.792 + 297 =
20. 20.Take 229. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 339. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 508. 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. 24.297 + 792 =
25. 25.198 + 891 =
26. 26.Do the 1089 trick with 557: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 459: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 331: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 741: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 550: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 250: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 991: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 452. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.594 + 495 =
36. 36.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 400. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 734. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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