1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 350 · 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 701. 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 1. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
4. 4.Take 440. 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 662. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 628: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.396 + 693 =
9. 9.594 + 495 =
10. 10.198 + 891 =
11. 11.Do the 1089 trick with 390: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 558: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.297 + 792 =
15. 15.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
18. 18.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.891 + 198 =
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
21. 21.Take 430. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 523: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.495 + 594 =
24. 24.Take 217. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 409: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 905. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 692: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 250: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 688: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 743. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 805. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 936. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 845: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
38. 38.Take 311. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.693 + 396 =
40. 40.Take 391. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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