1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 46 · 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 593. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 528: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
4. 4.198 + 891 =
5. 5.Do the 1089 trick with 702: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.594 + 495 =
7. 7.Take 810. 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 3. What is that number?
9. 9.Do the 1089 trick with 983: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
11. 11.Take 155. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.792 + 297 =
14. 14.Do the 1089 trick with 337: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.297 + 792 =
16. 16.Do the 1089 trick with 893: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 991: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 184: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 845. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.396 + 693 =
21. 21.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 248: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.693 + 396 =
25. 25.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 287. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 168: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 511. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 923: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
34. 34.Take 976. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 569. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 836: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 328. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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