1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 206 · 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 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
3. 3.Do the 1089 trick with 755: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.693 + 396 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
6. 6.Do the 1089 trick with 479: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
8. 8.792 + 297 =
9. 9.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 401. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 741. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 530: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.594 + 495 =
16. 16.Take 582. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
18. 18.Take 347. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.396 + 693 =
20. 20.297 + 792 =
21. 21.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 984: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 912: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
26. 26.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 139: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 254: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
30. 30.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
32. 32.891 + 198 =
33. 33.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.495 + 594 =
35. 35.198 + 891 =
36. 36.Take 753. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 632: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 166. 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 8. What is that number?
40. 40.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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