1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 526 · 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 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
4. 4.Take 173. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 621. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.198 + 891 =
7. 7.Do the 1089 trick with 705: 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 5. What is that number?
9. 9.Take 153. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 476. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
14. 14.Do the 1089 trick with 680: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 462: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.594 + 495 =
17. 17.Take 300. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 381. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 824. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.495 + 594 =
23. 23.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 133. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 328: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 482. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.891 + 198 =
28. 28.Do the 1089 trick with 411: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.297 + 792 =
30. 30.Take 209. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
32. 32.Do the 1089 trick with 267: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
34. 34.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 109. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 126. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 199. 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 7. What is that number?
39. 39.Take 289. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.792 + 297 =

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