1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 156 · 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 8. What is that number?
2. 2.Do the 1089 trick with 189: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 866: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 104: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
6. 6.693 + 396 =
7. 7.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 773: 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 1. What is that number?
10. 10.297 + 792 =
11. 11.Take 783. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 370. 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 2. What is that number?
14. 14.792 + 297 =
15. 15.Take 421. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
17. 17.Do the 1089 trick with 598: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 157. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 688: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.396 + 693 =
21. 21.Do the 1089 trick with 855: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 821: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 590. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 724. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 386: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
28. 28.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 567: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 956: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
32. 32.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.594 + 495 =
34. 34.Take 896. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 883: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 227: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.891 + 198 =
39. 39.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 825. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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