1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 85 · 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 713. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.891 + 198 =
4. 4.Do the 1089 trick with 390: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
6. 6.Do the 1089 trick with 612: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 533. 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 1. What is that number?
9. 9.495 + 594 =
10. 10.396 + 693 =
11. 11.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
13. 13.Do the 1089 trick with 548: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
15. 15.Do the 1089 trick with 117: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 912. 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.Take 955. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 318. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 894. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 119: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 264. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 355. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 885. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 962: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 723: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.198 + 891 =
30. 30.Take 496. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 326. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
34. 34.Take 238. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 923: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 588. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.693 + 396 =
38. 38.792 + 297 =
39. 39.Do the 1089 trick with 935: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 842. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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