1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 894 · 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. 1.297 + 792 =
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
3. 3.198 + 891 =
4. 4.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 503: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
7. 7.Take 189. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
9. 9.Take 430. Reverse its digits and take the smaller number away from the bigger one. 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.Take 953. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 733. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 803: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 127: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 230: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 864: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 992. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 451: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.693 + 396 =
23. 23.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.792 + 297 =
26. 26.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 781. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 833. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.594 + 495 =
33. 33.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 573: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 957: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 593: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 359: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 745. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 742: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 381. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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