1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 162 · 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.Take 789. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 155. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 429. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.594 + 495 =
7. 7.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 962: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 924. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 715. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.891 + 198 =
12. 12.Take 248. 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 7. What is that number?
14. 14.396 + 693 =
15. 15.693 + 396 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
17. 17.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 795. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 944: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 865: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
24. 24.Take 498. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 235: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 185. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 325. 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 5. What is that number?
29. 29.Do the 1089 trick with 946: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.495 + 594 =
31. 31.198 + 891 =
32. 32.Do the 1089 trick with 923: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 198: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 116. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 240: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 146. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 907: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 882: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 339. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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