1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 80 · 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. 1.495 + 594 =
2. 2.297 + 792 =
3. 3.Take 924. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 725: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 663. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.693 + 396 =
8. 8.792 + 297 =
9. 9.Do the 1089 trick with 218: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
13. 13.594 + 495 =
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
16. 16.Take 775. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 379. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 351. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 306: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
23. 23.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 145. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 954: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 715. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 274. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
31. 31.891 + 198 =
32. 32.198 + 891 =
33. 33.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 408: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 911: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.396 + 693 =
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?

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