1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 315 · 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 601: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 668. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 619. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 103: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 189. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 892. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 136: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
9. 9.Take 518. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 633: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.792 + 297 =
12. 12.693 + 396 =
13. 13.Do the 1089 trick with 770: 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 176. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
17. 17.Take 466. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 528. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 855. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 126. 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.Take 843. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 913: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
25. 25.495 + 594 =
26. 26.198 + 891 =
27. 27.Take 762. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 651. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 603. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 287: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
33. 33.Do the 1089 trick with 467: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 991. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 468: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 326. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 308. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 946. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 350: reverse and subtract, then reverse that answer and add. What do you get?

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