1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 803 · 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 2. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
3. 3.Take 197. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.297 + 792 =
5. 5.Take 307. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
8. 8.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.198 + 891 =
11. 11.Take 309. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 409. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.396 + 693 =
15. 15.Take 954. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 732. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.792 + 297 =
18. 18.Do the 1089 trick with 832: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 597. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 599: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 421. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 193: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.891 + 198 =
27. 27.594 + 495 =
28. 28.Take 311. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 913: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 587: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 239. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 805: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 892: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 428: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
37. 37.Do the 1089 trick with 107: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 721: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
40. 40.693 + 396 =

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