1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 565 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
2. 2.396 + 693 =
3. 3.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.198 + 891 =
5. 5.Take 977. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.594 + 495 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
8. 8.Take 431. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 341. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 573. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
12. 12.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.891 + 198 =
16. 16.Do the 1089 trick with 329: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 811: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 138. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 270: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 113: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 229: 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 5. What is that number?
23. 23.Take 279. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.495 + 594 =
25. 25.Take 149. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
28. 28.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 821. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 853: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 108: 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.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 976: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 921: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.297 + 792 =
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
39. 39.Do the 1089 trick with 552: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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