1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 254 · 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. 1.792 + 297 =
2. 2.693 + 396 =
3. 3.198 + 891 =
4. 4.Do the 1089 trick with 218: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 841: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 823: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.891 + 198 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
9. 9.Do the 1089 trick with 157: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.594 + 495 =
11. 11.Take 260. 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 6. What is that number?
13. 13.Take 500. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.396 + 693 =
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
16. 16.495 + 594 =
17. 17.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 895. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 994. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 189: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 529: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 460: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
27. 27.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 206. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 802: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 673. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
36. 36.Do the 1089 trick with 580: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
39. 39.Take 511. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 440: reverse and subtract, then reverse that answer and add. What do you get?

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