1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 594 · 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. 1.693 + 396 =
2. 2.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.198 + 891 =
4. 4.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
6. 6.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.594 + 495 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
12. 12.Take 224. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 396. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 650. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.792 + 297 =
16. 16.Do the 1089 trick with 993: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 761. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.396 + 693 =
20. 20.Do the 1089 trick with 240: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 437: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 810: 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 3. What is that number?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
27. 27.Take 154. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 328: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 821: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 735: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 270: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.495 + 594 =
34. 34.Take 551. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 558. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 437. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 259. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 486. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 376. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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