1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 536 · 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 8. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
3. 3.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.198 + 891 =
5. 5.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 973. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 774. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
10. 10.693 + 396 =
11. 11.Take 199. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 501: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 113. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 307: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 355: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 702: 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 6. What is that number?
18. 18.Take 269. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 650. 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 3. What is that number?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
22. 22.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.594 + 495 =
24. 24.Take 289. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 197. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 744: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
28. 28.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 268. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 510. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 954. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 357: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.891 + 198 =
35. 35.Do the 1089 trick with 941: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 653: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.792 + 297 =
39. 39.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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