1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 349 · 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.Do the 1089 trick with 350: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.693 + 396 =
3. 3.Do the 1089 trick with 245: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.891 + 198 =
5. 5.594 + 495 =
6. 6.495 + 594 =
7. 7.198 + 891 =
8. 8.Take 916. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 876: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 543: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
12. 12.Do the 1089 trick with 401: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
14. 14.Do the 1089 trick with 256: 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 6. What is that number?
16. 16.792 + 297 =
17. 17.Take 880. Reverse its digits and take the smaller number away from the bigger one. 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.Do the 1089 trick with 460: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
22. 22.Do the 1089 trick with 225: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 894: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 652: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 215. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
27. 27.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.297 + 792 =
29. 29.Take 287. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 409. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 801: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 702: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 895. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 854: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 278: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 547. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?

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