1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 711 · 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 165: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.594 + 495 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
4. 4.396 + 693 =
5. 5.Take 650. 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 3. What is that number?
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 792: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 927. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.792 + 297 =
11. 11.693 + 396 =
12. 12.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
14. 14.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 741. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 468. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 942. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 497. 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 4. What is that number?
23. 23.Do the 1089 trick with 147: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.891 + 198 =
25. 25.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 551. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 539. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 482. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 133. Reverse its digits and take the smaller number away from the bigger one. 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 691. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 764: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 510: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
35. 35.Do the 1089 trick with 773: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 230: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 954. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 961. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 528: reverse and subtract, then reverse that answer and add. What do you get?

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