1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 437 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
3. 3.Do the 1089 trick with 954: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.594 + 495 =
5. 5.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 347. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 519. 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 5. What is that number?
9. 9.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 165: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.495 + 594 =
12. 12.792 + 297 =
13. 13.Take 591. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.198 + 891 =
16. 16.Do the 1089 trick with 459: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
19. 19.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.297 + 792 =
21. 21.Do the 1089 trick with 387: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 653. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.396 + 693 =
24. 24.Take 549. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 274. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.693 + 396 =
27. 27.Take 500. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 639: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 139. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 721: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 466: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 178. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
39. 39.Do the 1089 trick with 164: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 759. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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