1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 196 · 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 562. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
3. 3.Do the 1089 trick with 801: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 422. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.792 + 297 =
6. 6.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 522. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.594 + 495 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.Take 512. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.396 + 693 =
12. 12.495 + 594 =
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
14. 14.Take 732. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 340. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.891 + 198 =
19. 19.Do the 1089 trick with 957: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 527. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.693 + 396 =
23. 23.198 + 891 =
24. 24.Take 911. 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 7. What is that number?
26. 26.Take 117. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 763: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 400. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
30. 30.Do the 1089 trick with 933: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 378. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 439: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 236: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 103: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 634. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?

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