1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 720 · 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 6. What is that number?
2. 2.Take 789. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
4. 4.Take 672. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 449. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 288: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 628. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 402. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 299: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.891 + 198 =
11. 11.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.297 + 792 =
14. 14.Do the 1089 trick with 816: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 674. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 376. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
22. 22.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.396 + 693 =
24. 24.Take 795. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 396. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 762: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 782: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 803: 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 1. What is that number?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
31. 31.Do the 1089 trick with 492: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 632: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 991. 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.Take 678. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 893. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.693 + 396 =

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