1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 465 · 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 960: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 417. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 529: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
5. 5.Take 744. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 649. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.891 + 198 =
8. 8.Do the 1089 trick with 639: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 632. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 147: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.693 + 396 =
12. 12.Take 883. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
14. 14.Do the 1089 trick with 963: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 764. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 347. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.495 + 594 =
19. 19.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
21. 21.Take 144. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 307: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
26. 26.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 501: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 331: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 239. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.396 + 693 =
32. 32.198 + 891 =
33. 33.Do the 1089 trick with 397: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 447. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 581: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 238. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 638. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 520: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 974. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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