1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 31 · 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 421. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 234. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 416. 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 2. What is that number?
5. 5.Take 814. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.891 + 198 =
7. 7.693 + 396 =
8. 8.198 + 891 =
9. 9.297 + 792 =
10. 10.396 + 693 =
11. 11.Do the 1089 trick with 892: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 206: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 168. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
16. 16.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 703. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 359: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
20. 20.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
26. 26.Take 784. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
28. 28.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 832: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 224: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.792 + 297 =
35. 35.Take 609. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 499. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 741: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. What do you get?

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