1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 730 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
2. 2.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 119: 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 8. What is that number?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
6. 6.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.495 + 594 =
8. 8.Do the 1089 trick with 289: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.396 + 693 =
10. 10.Do the 1089 trick with 366: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.594 + 495 =
13. 13.891 + 198 =
14. 14.Do the 1089 trick with 358: 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 2. What is that number?
16. 16.Take 208. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 924. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 432. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 105. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.198 + 891 =
22. 22.792 + 297 =
23. 23.Do the 1089 trick with 537: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 587. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 664: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 336. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 486: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 446. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 679: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.297 + 792 =
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
37. 37.Do the 1089 trick with 419: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 183. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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