1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 908 · 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 6. What is that number?
2. 2.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.594 + 495 =
5. 5.891 + 198 =
6. 6.198 + 891 =
7. 7.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 368: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 953. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
13. 13.693 + 396 =
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
16. 16.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.792 + 297 =
18. 18.Take 631. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.495 + 594 =
20. 20.Do the 1089 trick with 127: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 219. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 895. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
25. 25.Do the 1089 trick with 972: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 873: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 905: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 812. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 512. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 855: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 823. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 401. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 651: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.297 + 792 =
37. 37.Do the 1089 trick with 794: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 966. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 955: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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