1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 366 · 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 964: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
3. 3.594 + 495 =
4. 4.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.198 + 891 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
8. 8.Do the 1089 trick with 288: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
10. 10.891 + 198 =
11. 11.Take 611. 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.Take 608. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 916. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 629. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 825: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.297 + 792 =
19. 19.Take 378. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.495 + 594 =
22. 22.Do the 1089 trick with 139: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 865. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 993. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 450: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 450. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 159: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 489: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 863. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
36. 36.Do the 1089 trick with 258: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 439: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 914: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 369. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.792 + 297 =

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