1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 181 · 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 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 588: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.Take 833. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 377. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.297 + 792 =
7. 7.Take 603. 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 6. What is that number?
9. 9.Do the 1089 trick with 468: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.792 + 297 =
11. 11.396 + 693 =
12. 12.198 + 891 =
13. 13.693 + 396 =
14. 14.Do the 1089 trick with 669: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 197: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
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 913: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 900. 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.Take 194. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.594 + 495 =
25. 25.Do the 1089 trick with 547: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 937. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.495 + 594 =
28. 28.Do the 1089 trick with 671: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 920. 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 2. What is that number?
31. 31.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 638: 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 7. What is that number?
36. 36.Do the 1089 trick with 147: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 416. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
40. 40.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?

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