1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 174 · 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.Do the 1089 trick with 577: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.495 + 594 =
4. 4.792 + 297 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
7. 7.594 + 495 =
8. 8.Do the 1089 trick with 306: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 641. Reverse its digits and take the smaller number away from the bigger one. 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. 11.396 + 693 =
12. 12.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 527: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.693 + 396 =
16. 16.Take 735. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
19. 19.891 + 198 =
20. 20.297 + 792 =
21. 21.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.198 + 891 =
23. 23.Take 518. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 761. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 185. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 290. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 209: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 982: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
31. 31.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 277: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 964. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 470. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 735: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 722: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 492: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 422: reverse and subtract, then reverse that answer and add. What do you get?

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