1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 943 · 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 6. What is that number?
2. 2.Do the 1089 trick with 378: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
4. 4.Do the 1089 trick with 219: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 992. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
7. 7.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 953. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 277. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
12. 12.Do the 1089 trick with 631: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.891 + 198 =
14. 14.Take 359. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 983. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.198 + 891 =
17. 17.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 882. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 406. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
21. 21.Take 895. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.396 + 693 =
23. 23.Do the 1089 trick with 127: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 109: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 628: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 996. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.495 + 594 =
30. 30.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
32. 32.Do the 1089 trick with 559: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.792 + 297 =
34. 34.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 136. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 812. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 681. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 178. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 137: reverse and subtract, then reverse that answer and add. What do you get?

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