1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 648 · 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.Do the 1089 trick with 925: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
3. 3.Do the 1089 trick with 714: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
6. 6.Take 781. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 895: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.Do the 1089 trick with 792: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 891. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 944. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.891 + 198 =
15. 15.Take 397. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 230. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 715: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 300. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 184: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.693 + 396 =
21. 21.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 783. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
24. 24.Do the 1089 trick with 893: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 114: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 621: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
28. 28.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.792 + 297 =
31. 31.396 + 693 =
32. 32.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
34. 34.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 872: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 741. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 175. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 240. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 903. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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