1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 584 · 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.Do the 1089 trick with 512: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Do the 1089 trick with 769: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.Take 234. 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 7. What is that number?
7. 7.198 + 891 =
8. 8.Take 104. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
11. 11.Take 996. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 724: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.495 + 594 =
14. 14.Take 723. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.594 + 495 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
17. 17.Take 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 823: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.891 + 198 =
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
22. 22.Do the 1089 trick with 971: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
24. 24.Do the 1089 trick with 389: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 216: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 598: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 458. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 630. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 997. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.297 + 792 =
31. 31.Take 845. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 318. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.792 + 297 =
36. 36.693 + 396 =
37. 37.396 + 693 =
38. 38.Do the 1089 trick with 522: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 411: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 591: reverse and subtract, then reverse that answer and add. What do you get?

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