1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 365 · 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 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.495 + 594 =
3. 3.396 + 693 =
4. 4.Take 893. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 824: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 813: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 771. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 653: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 479. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
11. 11.Do the 1089 trick with 246: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.891 + 198 =
13. 13.297 + 792 =
14. 14.Do the 1089 trick with 189: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
17. 17.Take 689. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
20. 20.Do the 1089 trick with 946: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 791: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 258: 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 8. What is that number?
25. 25.792 + 297 =
26. 26.Do the 1089 trick with 370: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
28. 28.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 530: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 981: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.693 + 396 =
32. 32.Do the 1089 trick with 527: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 156. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 752: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 350. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.594 + 495 =
37. 37.Do the 1089 trick with 799: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 518: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 356. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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