1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 454 · 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 744. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
3. 3.Take 643. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.891 + 198 =
5. 5.198 + 891 =
6. 6.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 497: 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 8. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
10. 10.594 + 495 =
11. 11.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 527. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 614: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.693 + 396 =
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
19. 19.Take 833. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
21. 21.792 + 297 =
22. 22.Do the 1089 trick with 911: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 962: 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 4. What is that number?
25. 25.Take 824. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 992. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 338. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 268. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
30. 30.Do the 1089 trick with 147: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.495 + 594 =
33. 33.Take 825. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
36. 36.Do the 1089 trick with 360: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 699: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 469: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 345. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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