1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 233 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
3. 3.891 + 198 =
4. 4.693 + 396 =
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 370. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 876: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
12. 12.594 + 495 =
13. 13.198 + 891 =
14. 14.Take 952. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 126. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 799. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 562. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 712. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 651: 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.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 450. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 632: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 671: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 157. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 994: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 400: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
34. 34.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 381. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.495 + 594 =
39. 39.Take 843. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 331. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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