1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 616 · 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. 1.396 + 693 =
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
3. 3.Do the 1089 trick with 983: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 896. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 927. Reverse its digits and take the smaller number away from the bigger one. 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.Take 527. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
9. 9.Take 295. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.891 + 198 =
11. 11.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 471: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 883: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 269: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.297 + 792 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
17. 17.Do the 1089 trick with 520: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.594 + 495 =
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
21. 21.693 + 396 =
22. 22.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 297. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 522: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 573: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.198 + 891 =
30. 30.495 + 594 =
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
32. 32.Take 558. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 461. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 286: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.792 + 297 =
36. 36.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 196. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
40. 40.Take 227. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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