1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 360 · 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 4. What is that number?
2. 2.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.495 + 594 =
4. 4.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 891. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 790: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
8. 8.Do the 1089 trick with 669: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 823. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.198 + 891 =
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
12. 12.396 + 693 =
13. 13.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 598: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.693 + 396 =
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
19. 19.Do the 1089 trick with 278: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 917: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
24. 24.Do the 1089 trick with 189: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 903: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 457: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 659. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 926: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 316. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 703. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 267: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 396. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 921: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.297 + 792 =
36. 36.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 310: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.792 + 297 =
40. 40.Take 548. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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