1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 824 · 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 4. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
3. 3.891 + 198 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
5. 5.495 + 594 =
6. 6.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 471: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 143. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 991. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 326. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.396 + 693 =
12. 12.Take 600. 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 1. What is that number?
14. 14.Do the 1089 trick with 360: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 850. 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 5. What is that number?
17. 17.Take 682. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 278: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.693 + 396 =
20. 20.Take 683. 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. 22.792 + 297 =
23. 23.Take 225. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 239: 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 6. What is that number?
27. 27.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 395. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 866. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.198 + 891 =
33. 33.Take 446. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 822. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.594 + 495 =
36. 36.Take 397. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 886. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 711. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 672. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?

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