1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 182 · 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.Take 705. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 139. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 402: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 702. 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 1. What is that number?
6. 6.Take 732. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 874. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.594 + 495 =
9. 9.396 + 693 =
10. 10.Take 945. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.297 + 792 =
13. 13.Take 510. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 722. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.891 + 198 =
16. 16.Take 356. Reverse its digits and take the smaller number away from the bigger one. 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.Take 268. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 759: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.198 + 891 =
21. 21.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.792 + 297 =
23. 23.Do the 1089 trick with 610: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
25. 25.495 + 594 =
26. 26.Do the 1089 trick with 920: 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 6. What is that number?
28. 28.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
30. 30.Do the 1089 trick with 609: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 308. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 628: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 681. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
39. 39.Do the 1089 trick with 855: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 420: reverse and subtract, then reverse that answer and add. What do you get?

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