1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 699 · 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.Take 885. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 240: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 266. 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 4. What is that number?
6. 6.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.891 + 198 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.198 + 891 =
11. 11.Take 490. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.396 + 693 =
13. 13.Take 410. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
15. 15.Take 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 975: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.495 + 594 =
19. 19.Do the 1089 trick with 946: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 339. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
22. 22.Do the 1089 trick with 971: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 956. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 309. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 116: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 844. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 127: reverse and subtract, then reverse that answer and add. 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 209. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 674. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
32. 32.Take 712. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 902. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 984: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 548. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 581. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 671. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 268: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?

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