1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 241 · 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 7. What is that number?
2. 2.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 851: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.198 + 891 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
8. 8.Take 832. Reverse its digits and take the smaller number away from the bigger one. 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. 10.693 + 396 =
11. 11.396 + 693 =
12. 12.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
15. 15.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.297 + 792 =
17. 17.Take 439. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.891 + 198 =
19. 19.Do the 1089 trick with 752: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.792 + 297 =
22. 22.Take 588. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 139. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 370. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 775. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 952: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 561. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 603: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
33. 33.Take 527. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 179: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 570: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 831: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 358: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 279: reverse and subtract, then reverse that answer and add. What do you get?

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