1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 232 · 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.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.297 + 792 =
3. 3.594 + 495 =
4. 4.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
6. 6.Take 204. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 932. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 246. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 701: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 390: 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 4. What is that number?
13. 13.396 + 693 =
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
15. 15.891 + 198 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
17. 17.Take 825. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 391. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.495 + 594 =
21. 21.Take 108. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 507. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 188: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 623. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 883. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 673: reverse and subtract, then reverse that answer and add. 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.Do the 1089 trick with 196: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 523: 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 5. What is that number?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
37. 37.792 + 297 =
38. 38.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 326: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 139: reverse and subtract, then reverse that answer and add. What do you get?

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