1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 604 · 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 6. What is that number?
2. 2.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.594 + 495 =
4. 4.Take 802. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 442: 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 2. What is that number?
7. 7.Take 114. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
11. 11.Do the 1089 trick with 457: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 911: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 200: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
16. 16.Do the 1089 trick with 689: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.396 + 693 =
18. 18.198 + 891 =
19. 19.792 + 297 =
20. 20.Take 406. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 220. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 703. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 209: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 711. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 127: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 448. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 136. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 981: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 764. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 298: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 713. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 893: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.297 + 792 =
36. 36.Do the 1089 trick with 376: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
38. 38.Do the 1089 trick with 359: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 612: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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