1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 980 · 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 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.693 + 396 =
4. 4.198 + 891 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
6. 6.495 + 594 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.Do the 1089 trick with 497: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
10. 10.Take 710. 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 6. What is that number?
12. 12.Take 174. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
14. 14.Take 437. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 368. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 567: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 380: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.792 + 297 =
20. 20.Take 321. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.594 + 495 =
22. 22.891 + 198 =
23. 23.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 248: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 845. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 769: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 117: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 205. 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 4. What is that number?
32. 32.Do the 1089 trick with 471: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 339: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 327. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 833. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 512: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 157. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 668: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 447. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 967. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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