1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 8 · 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 930: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.396 + 693 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
4. 4.Do the 1089 trick with 659: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 196. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 755. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
9. 9.693 + 396 =
10. 10.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.297 + 792 =
12. 12.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 915. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 623: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
19. 19.Take 795. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
22. 22.Do the 1089 trick with 823: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 572. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.198 + 891 =
25. 25.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 385: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 461: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 174. Reverse its digits and take the smaller number away from the bigger one. 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. 31.891 + 198 =
32. 32.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 724. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
35. 35.Take 976. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 280: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 632. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 418: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 982: reverse and subtract, then reverse that answer and add. What do you get?

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