1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 977 · 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 206: 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 4. What is that number?
3. 3.693 + 396 =
4. 4.Take 441. 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 3. What is that number?
6. 6.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
9. 9.297 + 792 =
10. 10.Do the 1089 trick with 894: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
13. 13.396 + 693 =
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
15. 15.Do the 1089 trick with 910: 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 5. What is that number?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
18. 18.594 + 495 =
19. 19.Do the 1089 trick with 195: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.891 + 198 =
23. 23.Take 956. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 630. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.198 + 891 =
27. 27.495 + 594 =
28. 28.Take 267. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 916: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 328. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 284. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 753: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 834. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?

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