1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 629 · 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.Take 624. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 159: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.297 + 792 =
4. 4.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.198 + 891 =
6. 6.Take 771. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 210: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 319. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 628. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.792 + 297 =
14. 14.396 + 693 =
15. 15.Do the 1089 trick with 386: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 469. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.594 + 495 =
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
19. 19.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 921. 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 5. What is that number?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
23. 23.Do the 1089 trick with 578: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
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 990: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 118. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.891 + 198 =
29. 29.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 724. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 168. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 644. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
37. 37.Take 842. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 791: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 603. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?

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