1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 185 · 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 412. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 237: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 557. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.297 + 792 =
5. 5.693 + 396 =
6. 6.Take 992. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 264. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.396 + 693 =
9. 9.891 + 198 =
10. 10.Take 125. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 805. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 245. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 589: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 618. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
18. 18.495 + 594 =
19. 19.792 + 297 =
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
21. 21.Do the 1089 trick with 715: reverse and subtract, then reverse that answer and add. 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.Do the 1089 trick with 179: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 106. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
27. 27.Do the 1089 trick with 601: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 466: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 623: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 348. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
32. 32.594 + 495 =
33. 33.Do the 1089 trick with 200: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 937. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 551. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 196. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 327: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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