1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 133 · 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 5. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
3. 3.297 + 792 =
4. 4.594 + 495 =
5. 5.Do the 1089 trick with 816: reverse and subtract, then reverse that answer and add. 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. 7.396 + 693 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
9. 9.Take 437. Reverse its digits and take the smaller number away from the bigger one. 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.Do the 1089 trick with 739: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 351. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 577. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 218. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 115. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 255: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 907. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 301. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.792 + 297 =
21. 21.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 932. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
24. 24.Do the 1089 trick with 419: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 528: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.198 + 891 =
27. 27.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 159: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 801: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 163: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 316. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 946. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 254: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 620. 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 4. What is that number?
38. 38.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 641. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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