1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 392 · 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 5. What is that number?
2. 2.Take 395. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.891 + 198 =
4. 4.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 926. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.396 + 693 =
9. 9.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 731. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.594 + 495 =
12. 12.Do the 1089 trick with 842: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 521: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 136: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 219. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 240. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 400. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.297 + 792 =
21. 21.Take 589. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
23. 23.Do the 1089 trick with 224: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
25. 25.Do the 1089 trick with 628: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
27. 27.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.495 + 594 =
29. 29.Do the 1089 trick with 193: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 280. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 175: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 209. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
36. 36.Do the 1089 trick with 826: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
38. 38.Do the 1089 trick with 993: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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