1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 482 · 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 186: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Do the 1089 trick with 587: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 652: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
5. 5.Do the 1089 trick with 970: 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 2. What is that number?
7. 7.Do the 1089 trick with 164: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.198 + 891 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.Take 862. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.891 + 198 =
12. 12.594 + 495 =
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
14. 14.Do the 1089 trick with 168: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 714: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 795. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 724. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 634. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 119: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 884. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 891: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 542: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 390: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.297 + 792 =
29. 29.Do the 1089 trick with 156: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.693 + 396 =
31. 31.Take 714. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 950: 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 3. What is that number?
34. 34.Take 761. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 345: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
38. 38.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 361. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 651: reverse and subtract, then reverse that answer and add. What do you get?

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