1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 765 · 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.Take 962. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 208. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 466. 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 5. What is that number?
5. 5.693 + 396 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
8. 8.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.297 + 792 =
10. 10.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 159: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 224: 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 2. What is that number?
17. 17.Do the 1089 trick with 375: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 268: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 851. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 705: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 682: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 436: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
26. 26.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
29. 29.198 + 891 =
30. 30.Do the 1089 trick with 892: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
33. 33.Take 430. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 311. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.396 + 693 =
36. 36.Take 572. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 440: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 734: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 518: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 357: reverse and subtract, then reverse that answer and add. What do you get?

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