1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 716 · 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 580. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 379. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 459. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 886: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 723. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.891 + 198 =
7. 7.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.396 + 693 =
9. 9.Take 409. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 588. 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 5. What is that number?
13. 13.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
15. 15.Do the 1089 trick with 327: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 962. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.693 + 396 =
18. 18.297 + 792 =
19. 19.Do the 1089 trick with 520: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 370. 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 8. What is that number?
22. 22.Do the 1089 trick with 127: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 769. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.495 + 594 =
25. 25.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
27. 27.Do the 1089 trick with 118: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 961. 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 4. What is that number?
31. 31.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.792 + 297 =
33. 33.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 164. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 985. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 411: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.198 + 891 =
38. 38.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 844: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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