1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 966 · 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 543. 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 5. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.Take 986. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.396 + 693 =
9. 9.Take 559. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.198 + 891 =
11. 11.792 + 297 =
12. 12.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.495 + 594 =
14. 14.Do the 1089 trick with 801: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 441. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
17. 17.Do the 1089 trick with 295: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 712. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 264: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 491: 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 2. What is that number?
24. 24.Take 275. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 761. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 671: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 852. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.693 + 396 =
31. 31.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 198. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 217: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.297 + 792 =
35. 35.Take 755. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 439: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.594 + 495 =
38. 38.Do the 1089 trick with 589: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 793. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 469. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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