1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 521 · 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.Take 540. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.792 + 297 =
3. 3.693 + 396 =
4. 4.Take 661. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 704: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
7. 7.198 + 891 =
8. 8.Take 274. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
10. 10.297 + 792 =
11. 11.Take 340. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.594 + 495 =
13. 13.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 759. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
16. 16.Take 872. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.891 + 198 =
19. 19.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
22. 22.Take 205. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 927. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 701: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 982. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 460. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 124. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 912: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 731. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 752. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 173: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 603: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 977: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
38. 38.Take 310. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 590. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 452. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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