1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 644 · 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 1. What is that number?
2. 2.Take 234. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.693 + 396 =
5. 5.Take 629. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
7. 7.Take 722. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 290. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 892: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 472: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 926: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 783. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.891 + 198 =
15. 15.Take 256. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.198 + 891 =
17. 17.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.396 + 693 =
19. 19.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 553. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 199. 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 6. What is that number?
23. 23.Take 176. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 974. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 895: 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 2. What is that number?
27. 27.792 + 297 =
28. 28.Do the 1089 trick with 217: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 542. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 992: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 279. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 638. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 799. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 148. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.594 + 495 =
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
40. 40.495 + 594 =

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