1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 155 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
2. 2.198 + 891 =
3. 3.Do the 1089 trick with 701: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 771. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.297 + 792 =
6. 6.495 + 594 =
7. 7.891 + 198 =
8. 8.Do the 1089 trick with 119: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 618. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 478. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 741. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.792 + 297 =
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
14. 14.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 492. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 461: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
20. 20.Take 614. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 562: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.396 + 693 =
23. 23.Do the 1089 trick with 527: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 254. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 284. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
31. 31.Take 183. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 379. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.594 + 495 =
37. 37.Do the 1089 trick with 196: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 123: reverse and subtract, then reverse that answer and add. 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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