1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 81 · 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. 1.297 + 792 =
2. 2.396 + 693 =
3. 3.Do the 1089 trick with 964: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 236. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
6. 6.Do the 1089 trick with 306: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 467: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
9. 9.693 + 396 =
10. 10.Do the 1089 trick with 936: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 923. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 470. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.594 + 495 =
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
16. 16.Do the 1089 trick with 386: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.198 + 891 =
18. 18.Do the 1089 trick with 735: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.495 + 594 =
20. 20.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 741. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
23. 23.792 + 297 =
24. 24.Take 135. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 881: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.891 + 198 =
27. 27.Take 974. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 872: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 257. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 651: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
35. 35.Take 402. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
37. 37.Take 149. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 490. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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