1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 458 · 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 197: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
4. 4.Take 639. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.Take 269. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 442: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 873. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 822. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
12. 12.Do the 1089 trick with 173: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
15. 15.693 + 396 =
16. 16.792 + 297 =
17. 17.891 + 198 =
18. 18.Do the 1089 trick with 811: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 207: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 577. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.594 + 495 =
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
23. 23.Take 984. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 903. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.198 + 891 =
26. 26.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 801: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 571: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
30. 30.Do the 1089 trick with 286: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 833: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 377. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 200: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 804: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 552. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 743. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 884. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 773. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.396 + 693 =
40. 40.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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