1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 834 · 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 961: 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 3. What is that number?
3. 3.297 + 792 =
4. 4.198 + 891 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
6. 6.Take 934. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.594 + 495 =
8. 8.Take 157. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
12. 12.495 + 594 =
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
14. 14.Do the 1089 trick with 209: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 649. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 400. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 624. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
19. 19.Take 276. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 993. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.396 + 693 =
23. 23.Do the 1089 trick with 135: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 390: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.693 + 396 =
27. 27.Take 527. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 832: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
32. 32.792 + 297 =
33. 33.Do the 1089 trick with 826: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 319: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 529. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
37. 37.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 543: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 118. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 481. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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