1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 635 · 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 113. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 781: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 143. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.198 + 891 =
5. 5.Take 129. 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 3. What is that number?
7. 7.Do the 1089 trick with 705: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 992. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 558. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 865. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 256. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 916: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 971: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
15. 15.Take 106. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
19. 19.Take 905. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.396 + 693 =
22. 22.495 + 594 =
23. 23.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 188. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
26. 26.792 + 297 =
27. 27.Do the 1089 trick with 115: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 508: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.297 + 792 =
31. 31.Take 966. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 107: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
34. 34.Take 673. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 422: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 401. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 306. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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