1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 291 · 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 4. What is that number?
2. 2.Take 976. 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 7. What is that number?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
5. 5.198 + 891 =
6. 6.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.Do the 1089 trick with 183: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.297 + 792 =
10. 10.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.693 + 396 =
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
14. 14.Take 915. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 903: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.495 + 594 =
18. 18.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.891 + 198 =
20. 20.Do the 1089 trick with 148: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 875: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
23. 23.Do the 1089 trick with 365: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 488: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 401: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.594 + 495 =
27. 27.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 690: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 971: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
31. 31.Take 659. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 755. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 230: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 234: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 640: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 795: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 289. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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