1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 424 · 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. 1.495 + 594 =
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
4. 4.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 502. 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 8. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
9. 9.Take 216. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 581. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 873. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 985. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.891 + 198 =
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
16. 16.Take 408. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 874. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.198 + 891 =
20. 20.Take 944. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 528: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 198. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 401. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 553. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 924. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 124. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
29. 29.Do the 1089 trick with 694: 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 3. What is that number?
31. 31.Do the 1089 trick with 249: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 952: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 421. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 872. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 220. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 785: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 308. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 993. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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