1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 258 · 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 623. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 508: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
4. 4.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 681. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.297 + 792 =
7. 7.891 + 198 =
8. 8.Take 628. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.693 + 396 =
10. 10.Do the 1089 trick with 678: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 971: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
14. 14.Take 762. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 755. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 138. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.198 + 891 =
21. 21.Take 115. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 975. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 631. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
26. 26.Do the 1089 trick with 442: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.792 + 297 =
28. 28.Take 164. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 426. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 285: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 925: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 711. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.396 + 693 =
37. 37.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
39. 39.Do the 1089 trick with 866: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 490. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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