1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 188 · 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 823. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 722: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.792 + 297 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
5. 5.Do the 1089 trick with 611: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 952: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
8. 8.Do the 1089 trick with 128: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 851. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 183. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
13. 13.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 119: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
16. 16.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
20. 20.Take 723. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 561: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 210: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 327. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 649: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 759. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 771: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
30. 30.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 341. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 905. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.891 + 198 =
36. 36.Take 230. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 882. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 408: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
40. 40.Do the 1089 trick with 924: reverse and subtract, then reverse that answer and add. What do you get?

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