1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 44 · 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 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.495 + 594 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.792 + 297 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
8. 8.Take 265. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 681: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 589. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.693 + 396 =
14. 14.Take 553. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.594 + 495 =
16. 16.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
18. 18.Do the 1089 trick with 608: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 468: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 437. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 783. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 409: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 513: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
26. 26.Do the 1089 trick with 871: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 883. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 270: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
31. 31.396 + 693 =
32. 32.Do the 1089 trick with 641: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 581. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 557. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 274. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 230. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 341. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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