1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 934 · 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 703. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.594 + 495 =
3. 3.297 + 792 =
4. 4.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.198 + 891 =
6. 6.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 821: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
10. 10.Do the 1089 trick with 126: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.396 + 693 =
12. 12.495 + 594 =
13. 13.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 527: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 541: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
18. 18.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 734: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
24. 24.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 510. Reverse its digits and take the smaller number away from the bigger one. 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.Take 831. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 519. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 385. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 580. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 175. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 426: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
36. 36.Take 173. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 257: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 230. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 249. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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