1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 363 · 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 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.693 + 396 =
3. 3.Do the 1089 trick with 581: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 845: 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 8. What is that number?
6. 6.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 159: reverse and subtract, then reverse that answer and add. 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.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 910. 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 2. What is that number?
12. 12.Do the 1089 trick with 813: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.792 + 297 =
14. 14.Take 822. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 940. 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 4. What is that number?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
18. 18.Do the 1089 trick with 143: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.396 + 693 =
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
21. 21.Take 284. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 743: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 841: 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 5. What is that number?
26. 26.297 + 792 =
27. 27.Take 862. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 789. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
30. 30.Do the 1089 trick with 945: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 951: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 105. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 189: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 914. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.594 + 495 =
37. 37.198 + 891 =
38. 38.Take 654. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 684. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.891 + 198 =

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