1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 112 · 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. 1.594 + 495 =
2. 2.Take 124. 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 1. What is that number?
4. 4.Take 254. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
6. 6.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
8. 8.297 + 792 =
9. 9.Do the 1089 trick with 214: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 753. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.198 + 891 =
14. 14.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 976: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.396 + 693 =
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
18. 18.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 892: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
21. 21.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 420. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 429. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.891 + 198 =
25. 25.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 198. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 761. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 511. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 400. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 218: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 982: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 967. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 431. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.792 + 297 =
36. 36.Take 118. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 588: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
40. 40.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?

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