1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 595 · 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. 2.693 + 396 =
3. 3.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
5. 5.Do the 1089 trick with 661: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 833: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 799. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 754. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 844. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.297 + 792 =
13. 13.Do the 1089 trick with 396: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 490. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 570. 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 952. 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 1. What is that number?
19. 19.594 + 495 =
20. 20.Do the 1089 trick with 288: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 143. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 942: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.396 + 693 =
27. 27.Do the 1089 trick with 822: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 379. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.891 + 198 =
30. 30.198 + 891 =
31. 31.Do the 1089 trick with 816: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
33. 33.Take 276. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 209. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 638. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 571: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 821: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.495 + 594 =
39. 39.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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