1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 94 · 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 5. What is that number?
2. 2.594 + 495 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.Take 188. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 513. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
8. 8.Do the 1089 trick with 914: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 116: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 260: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 548. 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.Do the 1089 trick with 492: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 457. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.198 + 891 =
18. 18.Take 715. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 144: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.396 + 693 =
21. 21.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 943. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.495 + 594 =
24. 24.Take 557. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 821: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
27. 27.Take 893. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 280. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 299: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.792 + 297 =
32. 32.Take 815. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
34. 34.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.297 + 792 =
37. 37.Take 517. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 679: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 246: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 409. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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