1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 939 · 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.Do the 1089 trick with 560: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 196. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 397. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 570. 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.Do the 1089 trick with 912: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 946. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 895: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 982: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
11. 11.Do the 1089 trick with 421: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 447: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 107. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 339: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
17. 17.297 + 792 =
18. 18.792 + 297 =
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
21. 21.Do the 1089 trick with 256: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.594 + 495 =
23. 23.Take 688. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 527. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 147. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 991. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.396 + 693 =
28. 28.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 356: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 755: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.198 + 891 =
32. 32.Take 269. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.495 + 594 =
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
35. 35.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 300. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 521. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 713: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 290: reverse and subtract, then reverse that answer and add. What do you get?

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