1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 903 · 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 3. What is that number?
2. 2.495 + 594 =
3. 3.Take 634. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 301: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 227. 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.Do the 1089 trick with 705: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 550. 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 7. What is that number?
13. 13.Do the 1089 trick with 550: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.297 + 792 =
16. 16.396 + 693 =
17. 17.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.693 + 396 =
19. 19.Do the 1089 trick with 124: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 785. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 843: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 690: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 621: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 308: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 178: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
31. 31.Take 480. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 934. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 169: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 105: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.594 + 495 =
36. 36.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 518: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 196. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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