1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 348 · 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 104. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
3. 3.Do the 1089 trick with 380: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 874: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.396 + 693 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
7. 7.Take 487. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
9. 9.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 108. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.297 + 792 =
14. 14.792 + 297 =
15. 15.Do the 1089 trick with 619: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
18. 18.Take 851. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 169: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
21. 21.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 915: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 126. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 753. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
28. 28.Do the 1089 trick with 688: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 468: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.198 + 891 =
31. 31.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 603. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.594 + 495 =
34. 34.495 + 594 =
35. 35.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 664. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 218. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 619. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
40. 40.891 + 198 =

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