1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 932 · 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 5. What is that number?
2. 2.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 268. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.396 + 693 =
6. 6.594 + 495 =
7. 7.Take 742. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 467. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 804: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.792 + 297 =
15. 15.Do the 1089 trick with 370: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 397. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
20. 20.Take 197. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
22. 22.Take 983. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 402. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 266. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
28. 28.Do the 1089 trick with 934: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 711. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 114: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 714. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 952. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 411. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.198 + 891 =
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
38. 38.Take 832. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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