1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 148 · 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 3. What is that number?
2. 2.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.396 + 693 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
5. 5.Do the 1089 trick with 348: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 704. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 225. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 109. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 890. 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 6. What is that number?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
13. 13.495 + 594 =
14. 14.Do the 1089 trick with 951: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.891 + 198 =
16. 16.Do the 1089 trick with 876: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.792 + 297 =
18. 18.Do the 1089 trick with 217: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 622: reverse and subtract, then reverse that answer and add. 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.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 638: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 501: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.198 + 891 =
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
27. 27.Take 731. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.297 + 792 =
29. 29.Do the 1089 trick with 843: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 517. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 290. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 774. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
35. 35.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
38. 38.Take 169. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 703: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.693 + 396 =

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