1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 877 · 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 498: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.495 + 594 =
3. 3.Take 927. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
5. 5.Do the 1089 trick with 892: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.297 + 792 =
7. 7.792 + 297 =
8. 8.396 + 693 =
9. 9.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
12. 12.Take 256. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 178: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 265: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 477. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.891 + 198 =
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
18. 18.Do the 1089 trick with 179: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 624: 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
22. 22.Take 619. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 377. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 450: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 411: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
27. 27.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 715. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 317: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 409: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
32. 32.Take 185. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 560: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 296. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
38. 38.Take 683. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 821: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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