1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 378 · 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 910. 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 2. What is that number?
3. 3.Take 521. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 254. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.891 + 198 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
7. 7.693 + 396 =
8. 8.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
10. 10.Take 319. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 944: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.396 + 693 =
13. 13.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 173. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.495 + 594 =
16. 16.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 164. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 711. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 456. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 136. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
25. 25.Take 249. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 779. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 511: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 350. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
33. 33.Do the 1089 trick with 194: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 408. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 103: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 905. 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. 38.198 + 891 =
39. 39.Take 156. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 205: reverse and subtract, then reverse that answer and add. What do you get?

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