1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 731 · 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 980. 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 6. What is that number?
3. 3.Take 662. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
5. 5.495 + 594 =
6. 6.693 + 396 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
8. 8.Do the 1089 trick with 952: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
11. 11.297 + 792 =
12. 12.Do the 1089 trick with 510: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 692: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 420. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.198 + 891 =
16. 16.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 547. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 550: 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 1. What is that number?
20. 20.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 194. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
23. 23.Do the 1089 trick with 790: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.396 + 693 =
25. 25.Do the 1089 trick with 200: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 487: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 361. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 194: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 750. Reverse its digits and take the smaller number away from the bigger one. 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 704. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.891 + 198 =
34. 34.Do the 1089 trick with 497: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 450: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 537: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 521. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 732. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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