1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 698 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
2. 2.Take 644. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.297 + 792 =
4. 4.Take 619. 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 2. What is that number?
6. 6.Take 106. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
8. 8.Take 136. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.495 + 594 =
11. 11.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
13. 13.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 154. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 721: 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.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 386: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. 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 659: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.594 + 495 =
23. 23.Take 179. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 478: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 165. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 310. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 731. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.693 + 396 =
31. 31.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 299: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 802. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 442. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.792 + 297 =
36. 36.Do the 1089 trick with 349: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 744. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
39. 39.Take 713. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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