1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 157 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
2. 2.594 + 495 =
3. 3.Take 439. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 184. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
7. 7.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.198 + 891 =
9. 9.Do the 1089 trick with 569: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
11. 11.396 + 693 =
12. 12.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.891 + 198 =
14. 14.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
16. 16.Take 903. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 107: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.495 + 594 =
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
20. 20.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 802. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 297: 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 6. What is that number?
24. 24.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
26. 26.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.297 + 792 =
29. 29.Take 268. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 369: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 663: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 379: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 167. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 461. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 743. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 966: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 256: reverse and subtract, then reverse that answer and add. What do you get?

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