1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 444 · 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. 1.594 + 495 =
2. 2.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 944: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.396 + 693 =
5. 5.Take 714. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
8. 8.297 + 792 =
9. 9.Do the 1089 trick with 821: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 210: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 461: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 527: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.792 + 297 =
14. 14.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 953. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
17. 17.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 466. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 338. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.891 + 198 =
21. 21.Do the 1089 trick with 300: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
23. 23.495 + 594 =
24. 24.Take 345. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 390: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
27. 27.Do the 1089 trick with 370: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 623. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 255. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 923: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.198 + 891 =
33. 33.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 487: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 628: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
40. 40.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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