1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 841 · 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 547. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.594 + 495 =
3. 3.495 + 594 =
4. 4.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 145: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 761. 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 2. What is that number?
8. 8.Do the 1089 trick with 781: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 821: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.891 + 198 =
11. 11.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.297 + 792 =
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
14. 14.Take 287. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 961. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 533. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
19. 19.198 + 891 =
20. 20.Do the 1089 trick with 305: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
22. 22.Take 699. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
25. 25.Take 311. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.396 + 693 =
27. 27.Take 380. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
29. 29.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 154. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
35. 35.Take 549. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
37. 37.Take 724. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 452. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 904: reverse and subtract, then reverse that answer and add. What do you get?

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