1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 393 · 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. 2.297 + 792 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.198 + 891 =
5. 5.Take 753. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.495 + 594 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
9. 9.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.891 + 198 =
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
12. 12.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.396 + 693 =
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
15. 15.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 743. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 225. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
21. 21.Take 400. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 103: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 311. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 441. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 842: 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 4. What is that number?
30. 30.Take 775. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 570: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 539: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 734. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 883: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 964. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 386: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. 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. 40.693 + 396 =

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