1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 976 · 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 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.297 + 792 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
5. 5.495 + 594 =
6. 6.Take 547. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 820. Reverse its digits and take the smaller number away from the bigger one. 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.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.396 + 693 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
13. 13.Do the 1089 trick with 704: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
15. 15.Do the 1089 trick with 883: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 643: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 184. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 105. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 326. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 237: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.792 + 297 =
31. 31.594 + 495 =
32. 32.Take 187. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 782: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 136: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 632. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 359: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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