1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 653 · 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 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
3. 3.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
5. 5.Take 598. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 581. 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 5. What is that number?
8. 8.Take 895. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 225. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 932. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 351. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.396 + 693 =
16. 16.Take 995. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 381. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 472. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 548: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.297 + 792 =
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
23. 23.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 451: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 118. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 982. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.891 + 198 =
28. 28.Do the 1089 trick with 723: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.594 + 495 =
30. 30.Do the 1089 trick with 864: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.792 + 297 =
32. 32.693 + 396 =
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
35. 35.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 400. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 751. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 154: 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 4. What is that number?
40. 40.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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