1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 797 · 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 290: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Do the 1089 trick with 156: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 467: 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 2. What is that number?
7. 7.Do the 1089 trick with 461: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 409. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 682: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 816. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 329: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 872: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 982. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.891 + 198 =
19. 19.297 + 792 =
20. 20.Take 952. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 537. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 924. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 250: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 195. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 410. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 497. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 991: 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 1. What is that number?
31. 31.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
34. 34.Take 785. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 722. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.594 + 495 =
37. 37.Take 942. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 581. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 276. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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