1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 264 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
4. 4.198 + 891 =
5. 5.Take 614. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 562: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.891 + 198 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
12. 12.693 + 396 =
13. 13.Do the 1089 trick with 650: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 145. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 916: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 471: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 208. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 276. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 618. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.594 + 495 =
23. 23.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 957. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.297 + 792 =
28. 28.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 901: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 876: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
34. 34.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
36. 36.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 308: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.495 + 594 =
39. 39.Do the 1089 trick with 317: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?

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