1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 89 · 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 911: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
5. 5.Take 441. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.792 + 297 =
7. 7.891 + 198 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
9. 9.Do the 1089 trick with 189: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.198 + 891 =
11. 11.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.594 + 495 =
13. 13.Do the 1089 trick with 298: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.693 + 396 =
15. 15.Take 210. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 558. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.396 + 693 =
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
19. 19.Do the 1089 trick with 844: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 739: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 711: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 630. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 874. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
26. 26.Take 466. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 310: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 927. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 832: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 409. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 770. 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 5. What is that number?
33. 33.Do the 1089 trick with 268: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.495 + 594 =
35. 35.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 863. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 503: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.297 + 792 =
40. 40.Do the 1089 trick with 791: reverse and subtract, then reverse that answer and add. What do you get?

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