1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 53 · 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.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
4. 4.792 + 297 =
5. 5.Take 842. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 951: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 681: 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 3. What is that number?
11. 11.Take 451. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.198 + 891 =
13. 13.Take 618. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.297 + 792 =
15. 15.495 + 594 =
16. 16.Do the 1089 trick with 930: 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 4. What is that number?
18. 18.693 + 396 =
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
20. 20.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 653: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 614: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 914: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.891 + 198 =
27. 27.Do the 1089 trick with 259: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 468. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
30. 30.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 257. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 662. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 783: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 249: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 997. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 663. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 896. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 962. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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