1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 856 · 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 2. What is that number?
2. 2.Do the 1089 trick with 812: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 209. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 826. 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 1. What is that number?
6. 6.Take 680. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
8. 8.Do the 1089 trick with 139: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 139. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.693 + 396 =
11. 11.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 460. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 632. 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 6. What is that number?
15. 15.Take 370. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
18. 18.Do the 1089 trick with 480: 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 3. What is that number?
20. 20.297 + 792 =
21. 21.198 + 891 =
22. 22.Take 124. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 773. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 996. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 802. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 650. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.594 + 495 =
30. 30.495 + 594 =
31. 31.Take 167. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.891 + 198 =
33. 33.Do the 1089 trick with 360: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.792 + 297 =
35. 35.Do the 1089 trick with 742: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 451: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 275. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 306: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?

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