1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 560 · 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 250: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
5. 5.495 + 594 =
6. 6.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 911. 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 3. What is that number?
9. 9.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 356. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
12. 12.Do the 1089 trick with 195: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.693 + 396 =
14. 14.Take 168. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 762: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 834. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 602: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.198 + 891 =
20. 20.792 + 297 =
21. 21.594 + 495 =
22. 22.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.891 + 198 =
25. 25.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 399. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.396 + 693 =
31. 31.Take 844. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 239. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 409. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 648. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 680: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 618: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 855. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 188: reverse and subtract, then reverse that answer and add. What do you get?

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