1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 558 · 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 763. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
3. 3.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.Take 315. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 139. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.396 + 693 =
11. 11.Take 340. 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 3. What is that number?
13. 13.495 + 594 =
14. 14.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
17. 17.Take 258. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 642. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.693 + 396 =
21. 21.594 + 495 =
22. 22.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 299. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 913. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
30. 30.Do the 1089 trick with 751: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 389: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 711. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.297 + 792 =
34. 34.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 896: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 460: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 267: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 533. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 351. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?

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