1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 619 · 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 127. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.891 + 198 =
3. 3.396 + 693 =
4. 4.Take 256. 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 3. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
7. 7.Take 329. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 460. 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 651: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.594 + 495 =
12. 12.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 834: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 813: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 248: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.495 + 594 =
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
18. 18.Do the 1089 trick with 309: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 682: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 127: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 911: 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 1. What is that number?
24. 24.Take 851. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 936: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
27. 27.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.297 + 792 =
29. 29.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 664: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 864. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 366. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 935: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 540: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 822. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.693 + 396 =
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
40. 40.Take 296. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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