1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 625 · 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. 1.891 + 198 =
2. 2.Do the 1089 trick with 135: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
4. 4.Do the 1089 trick with 710: 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 6. What is that number?
6. 6.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 891. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.693 + 396 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.Take 412. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 724. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 533. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
14. 14.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 580. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 613. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 308: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 914: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 295: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.198 + 891 =
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
23. 23.Do the 1089 trick with 123: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 107: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 306: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.495 + 594 =
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
29. 29.Take 522. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.297 + 792 =
31. 31.Do the 1089 trick with 527: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 963. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
34. 34.Do the 1089 trick with 438: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 388. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 853: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 714. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 169. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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