1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 761 · 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 3. What is that number?
2. 2.Do the 1089 trick with 216: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 603. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
5. 5.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 508. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.792 + 297 =
9. 9.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
11. 11.Take 754. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.297 + 792 =
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
14. 14.Take 402. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.693 + 396 =
16. 16.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 310. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 269: 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 6. What is that number?
20. 20.Take 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.594 + 495 =
22. 22.Do the 1089 trick with 953: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 871. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.495 + 594 =
25. 25.Take 452. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 965. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.891 + 198 =
29. 29.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 510: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 289: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 108. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 387: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
38. 38.Take 380. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 229. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?

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