1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 72 · 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 960: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Do the 1089 trick with 541: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 689. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 426. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.297 + 792 =
7. 7.Take 722. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 871: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 297. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.693 + 396 =
11. 11.Do the 1089 trick with 831: 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 3. What is that number?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
14. 14.Take 821. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
16. 16.Do the 1089 trick with 846: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 224: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 158. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 431. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
24. 24.594 + 495 =
25. 25.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 976. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 177. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 109: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 118. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.198 + 891 =
35. 35.Take 679. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 983. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 375: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 148. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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