1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 893 · 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. 1.891 + 198 =
2. 2.693 + 396 =
3. 3.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 830. 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 3. What is that number?
6. 6.Do the 1089 trick with 694: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 490. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 634: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 963. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 917: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
13. 13.Take 654. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.396 + 693 =
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
16. 16.Do the 1089 trick with 397: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.495 + 594 =
19. 19.Take 886. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.792 + 297 =
22. 22.Take 388. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 300: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 624: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 350: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
28. 28.594 + 495 =
29. 29.198 + 891 =
30. 30.Take 795. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 341: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 853. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 255. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 650: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
39. 39.Do the 1089 trick with 572: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 159: reverse and subtract, then reverse that answer and add. What do you get?

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