1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 572 · 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 4. What is that number?
2. 2.594 + 495 =
3. 3.396 + 693 =
4. 4.693 + 396 =
5. 5.Do the 1089 trick with 458: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 936: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
8. 8.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.792 + 297 =
10. 10.Do the 1089 trick with 790: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.891 + 198 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
13. 13.Take 175. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
15. 15.198 + 891 =
16. 16.Take 502. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
18. 18.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 811: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
21. 21.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 280. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 692. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 654. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 551: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 491. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 447: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 761: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 378. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 199. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 238. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 610: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 935. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
37. 37.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 864: reverse and subtract, then reverse that answer and add. What do you get?

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