1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 338 · 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 570: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 622. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 369. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.792 + 297 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
6. 6.396 + 693 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
8. 8.297 + 792 =
9. 9.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 451. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
12. 12.Take 176. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 623. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 277. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
16. 16.495 + 594 =
17. 17.Take 992. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 680. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 370: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 932. 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 5. What is that number?
22. 22.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
24. 24.891 + 198 =
25. 25.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 618. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 411: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 950: 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 4. What is that number?
31. 31.Do the 1089 trick with 653: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.693 + 396 =
33. 33.Take 355. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 279. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.594 + 495 =
36. 36.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 581. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
39. 39.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 175. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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