1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 573 · 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 330. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 205: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.693 + 396 =
8. 8.198 + 891 =
9. 9.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
11. 11.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 755. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 125. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
16. 16.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.495 + 594 =
18. 18.396 + 693 =
19. 19.Do the 1089 trick with 913: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.792 + 297 =
21. 21.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 129: 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 7. What is that number?
24. 24.297 + 792 =
25. 25.Take 301. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 882. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 295. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 659. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 528: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 520: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 237: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 658. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 901: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 349. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 753: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?

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