1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 916 · 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. 1.396 + 693 =
2. 2.198 + 891 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
4. 4.Do the 1089 trick with 133: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 670. 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 6. What is that number?
7. 7.Take 568. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 661. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 104: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 704: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 834. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 840: 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 1. What is that number?
17. 17.Take 460. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 773. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 986. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.693 + 396 =
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
22. 22.Do the 1089 trick with 369: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.594 + 495 =
24. 24.Do the 1089 trick with 218: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. 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 567. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 578: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 377. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 297. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
33. 33.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 395: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 480. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 844: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 169. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 996: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 461. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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