1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 853 · 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 417. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.891 + 198 =
3. 3.198 + 891 =
4. 4.396 + 693 =
5. 5.Do the 1089 trick with 945: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
8. 8.693 + 396 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
10. 10.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.792 + 297 =
12. 12.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 155: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 944: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 327: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 377. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 508. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 420: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 119: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 511. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 567. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.495 + 594 =
27. 27.Take 317. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 843: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.594 + 495 =
33. 33.Do the 1089 trick with 684: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
36. 36.Do the 1089 trick with 317: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 993. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 399: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 331: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 588. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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