1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 226 · 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 2. What is that number?
2. 2.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.198 + 891 =
4. 4.792 + 297 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
7. 7.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 411. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 440: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 682. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
12. 12.891 + 198 =
13. 13.Take 350. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 745. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 813. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 714. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 185: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.693 + 396 =
20. 20.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 623: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 934. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 947: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 953. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
27. 27.495 + 594 =
28. 28.Do the 1089 trick with 469: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.594 + 495 =
30. 30.Do the 1089 trick with 104: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.396 + 693 =
32. 32.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.297 + 792 =
35. 35.Take 658. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 781. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 926: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 713: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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