1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 949 · 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 106. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 335. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 360. 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 8. What is that number?
6. 6.Take 418. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 810. 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 6. What is that number?
9. 9.693 + 396 =
10. 10.Take 259. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.495 + 594 =
12. 12.Take 578. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.792 + 297 =
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
15. 15.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 419: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
18. 18.Take 479. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 590. 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 5. What is that number?
21. 21.Do the 1089 trick with 901: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 277: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 811: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
25. 25.Do the 1089 trick with 991: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 993. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 567: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 285. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.891 + 198 =
31. 31.198 + 891 =
32. 32.Do the 1089 trick with 866: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 588: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 295. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.396 + 693 =
37. 37.Do the 1089 trick with 669: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 883. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 297: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?

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