1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 289 · 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 846. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 940: 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.Take 361. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.297 + 792 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
7. 7.Take 872. 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. 9.891 + 198 =
10. 10.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 845: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
13. 13.Do the 1089 trick with 672: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 328. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.792 + 297 =
17. 17.Take 169. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 832. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 462. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.495 + 594 =
21. 21.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 186. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 774. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
25. 25.Do the 1089 trick with 176: 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 1. What is that number?
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 905: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 340. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 118: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 540: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 491: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 853. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 450: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 971: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.396 + 693 =
39. 39.Take 881. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?

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