1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 111 · 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. 1.594 + 495 =
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
3. 3.198 + 891 =
4. 4.495 + 594 =
5. 5.891 + 198 =
6. 6.Do the 1089 trick with 482: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.396 + 693 =
9. 9.Take 753. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.297 + 792 =
12. 12.Take 147. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 349. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 347: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 336. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
21. 21.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 976: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 456. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
25. 25.Do the 1089 trick with 691: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 286. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 520: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 891: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 703. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 452. 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 8. What is that number?
34. 34.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 487: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 891. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 774. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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