1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 597 · 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 8. What is that number?
2. 2.594 + 495 =
3. 3.Take 163. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 906. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 902: 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 2. What is that number?
8. 8.Do the 1089 trick with 690: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 513: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.297 + 792 =
12. 12.891 + 198 =
13. 13.Take 230. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.693 + 396 =
16. 16.Take 198. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
19. 19.Take 523. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 866. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 674. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 855. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 280. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 558: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 139. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 538. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 264: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 553: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 530: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 209: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.396 + 693 =
40. 40.Do the 1089 trick with 621: reverse and subtract, then reverse that answer and add. What do you get?

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