1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 899 · 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 990: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 895. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 761. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 960. 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 6. What is that number?
6. 6.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
9. 9.Take 779. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 763. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 942: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.495 + 594 =
13. 13.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 855. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.693 + 396 =
16. 16.396 + 693 =
17. 17.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.792 + 297 =
19. 19.Do the 1089 trick with 853: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.297 + 792 =
21. 21.Take 467. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 603: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 902: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 673. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
27. 27.594 + 495 =
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
29. 29.891 + 198 =
30. 30.Take 886. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 570. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 118. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 489. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
37. 37.Do the 1089 trick with 218: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 651. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?

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