1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 722 · 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.Take 779. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 764: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.495 + 594 =
4. 4.Do the 1089 trick with 429: 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 1. What is that number?
6. 6.198 + 891 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 278. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.693 + 396 =
14. 14.396 + 693 =
15. 15.891 + 198 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
17. 17.Take 269. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 955: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 200. 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 7. What is that number?
21. 21.Take 109. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 922: 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 6. What is that number?
24. 24.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 219: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 927. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 914: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 402. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 914. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.297 + 792 =
37. 37.Do the 1089 trick with 679: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 460: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.594 + 495 =
40. 40.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?

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