1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 707 · 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 3. What is that number?
2. 2.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.594 + 495 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
6. 6.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.396 + 693 =
8. 8.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.297 + 792 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
11. 11.495 + 594 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
13. 13.Do the 1089 trick with 256: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
15. 15.198 + 891 =
16. 16.693 + 396 =
17. 17.Take 510. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 975: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 391. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 631: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 420. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 552: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 773. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 957. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 693. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
29. 29.Take 831. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 502. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 923. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 168. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 814. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 290: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 401: reverse and subtract, then reverse that answer and add. What do you get?

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