1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 583 · 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. 1.594 + 495 =
2. 2.198 + 891 =
3. 3.297 + 792 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
6. 6.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.693 + 396 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.Do the 1089 trick with 751: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
15. 15.Take 724. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 872. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 690: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 115. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
21. 21.Take 103. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.396 + 693 =
23. 23.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 916. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 530: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 587. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.891 + 198 =
28. 28.Take 914. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 905. 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 604. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 935. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 543: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 512. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 257: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 654. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 942. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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