1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 60 · 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 147. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.594 + 495 =
3. 3.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
5. 5.Take 330. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
9. 9.891 + 198 =
10. 10.Take 365. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 239. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 863: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 621. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.198 + 891 =
15. 15.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 178: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 460: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
20. 20.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 116. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.792 + 297 =
23. 23.396 + 693 =
24. 24.Do the 1089 trick with 296: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 217. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 270: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 821. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 513. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.693 + 396 =
33. 33.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 417. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 355. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 975: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 531: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 165: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 975. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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