1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 467 · 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.Do the 1089 trick with 227: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
3. 3.Do the 1089 trick with 183: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.198 + 891 =
5. 5.396 + 693 =
6. 6.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 400: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 259: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.693 + 396 =
11. 11.Take 841. 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 6. What is that number?
13. 13.Do the 1089 trick with 883: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 165. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 654. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 472: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.594 + 495 =
19. 19.Do the 1089 trick with 923: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 802. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 365: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
24. 24.891 + 198 =
25. 25.Do the 1089 trick with 790: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 702: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 395. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 214: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 439. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
31. 31.Take 764. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 477. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 843. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 895. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
37. 37.Take 230. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 945. 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 7. What is that number?
40. 40.Do the 1089 trick with 136: reverse and subtract, then reverse that answer and add. What do you get?

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