1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 885 · 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 259: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
3. 3.198 + 891 =
4. 4.Do the 1089 trick with 128: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
7. 7.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.891 + 198 =
9. 9.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.792 + 297 =
11. 11.Take 792. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 299. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 327: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
15. 15.Do the 1089 trick with 973: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 942. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 773. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 402: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 551. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 755: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 407: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 668. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 533. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 831: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 167. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 137: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 569: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 842. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 882: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.396 + 693 =
37. 37.Do the 1089 trick with 119: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 540: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 287. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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