1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 590 · 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 1. What is that number?
2. 2.Take 925. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 500. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 702. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.198 + 891 =
7. 7.891 + 198 =
8. 8.Do the 1089 trick with 477: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.594 + 495 =
11. 11.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. 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.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
15. 15.Do the 1089 trick with 552: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
17. 17.Take 711. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 753: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 831. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.495 + 594 =
21. 21.297 + 792 =
22. 22.792 + 297 =
23. 23.693 + 396 =
24. 24.Do the 1089 trick with 260: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 350: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 612. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 487. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.396 + 693 =
30. 30.Take 769. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 942. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 139: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 461. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 771. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 871: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 328: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
40. 40.Do the 1089 trick with 735: reverse and subtract, then reverse that answer and add. What do you get?

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