1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 163 · 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 743. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
3. 3.Do the 1089 trick with 543: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.792 + 297 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
6. 6.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.297 + 792 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
10. 10.495 + 594 =
11. 11.Do the 1089 trick with 507: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 367. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 913: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 441: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 501. 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 5. What is that number?
18. 18.Do the 1089 trick with 614: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 237. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.693 + 396 =
23. 23.Do the 1089 trick with 703: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 954: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 428: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.891 + 198 =
29. 29.Take 370. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 704. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 499. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 103. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 749. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 300: 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 4. What is that number?
36. 36.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 789. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 563. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.594 + 495 =

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