1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 34 · 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 288. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.594 + 495 =
4. 4.396 + 693 =
5. 5.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 234: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 168. 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 4. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.Take 884. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 510. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
13. 13.Take 811. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 551: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 856. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 691. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 438. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 803: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 144. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.495 + 594 =
21. 21.297 + 792 =
22. 22.Take 702. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 260: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 642: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 733: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 548: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.198 + 891 =
35. 35.693 + 396 =
36. 36.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 311. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 985. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?

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