1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 35 · 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 126. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.495 + 594 =
3. 3.Take 446. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 771. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 452. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 428. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 326: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 742: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 274: 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 8. What is that number?
14. 14.Do the 1089 trick with 164: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 420: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.891 + 198 =
17. 17.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 301: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
20. 20.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
23. 23.792 + 297 =
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
25. 25.Take 689. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 994. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 400. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
29. 29.Take 540. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 109. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.297 + 792 =
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
33. 33.Take 135. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 461: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 550: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 139. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 380. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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