1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 600 · 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 155: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Do the 1089 trick with 115: 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 2. What is that number?
4. 4.Do the 1089 trick with 562: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.495 + 594 =
9. 9.594 + 495 =
10. 10.891 + 198 =
11. 11.396 + 693 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
13. 13.198 + 891 =
14. 14.Take 208. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 900. 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 3. What is that number?
17. 17.Take 149. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 713. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
20. 20.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.297 + 792 =
22. 22.Do the 1089 trick with 198: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.792 + 297 =
24. 24.Do the 1089 trick with 348: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 460: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 164: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 943. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.693 + 396 =
30. 30.Do the 1089 trick with 330: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 300: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 873. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 784. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 542. 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 7. What is that number?
36. 36.Take 307. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 289: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 598. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 651: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 816: reverse and subtract, then reverse that answer and add. What do you get?

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