1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 957 · 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 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 310. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
4. 4.Take 237. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 164. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.495 + 594 =
10. 10.Do the 1089 trick with 965: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 779: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 962. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
14. 14.Do the 1089 trick with 902: 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 981: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
19. 19.Take 632. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 984. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.297 + 792 =
22. 22.Do the 1089 trick with 346: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 396: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.693 + 396 =
25. 25.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 806. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
28. 28.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.594 + 495 =
30. 30.Do the 1089 trick with 639: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.198 + 891 =
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
33. 33.Take 519. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 461: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 124: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 265. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 573: reverse and subtract, then reverse that answer and add. What do you get?

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