1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 212 · 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.Do the 1089 trick with 137: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 367. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.198 + 891 =
4. 4.495 + 594 =
5. 5.Do the 1089 trick with 420: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
7. 7.Take 197. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
12. 12.Do the 1089 trick with 164: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 901: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.693 + 396 =
15. 15.Take 276. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 795: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 602: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.297 + 792 =
20. 20.Take 794. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
25. 25.Take 106. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
28. 28.Do the 1089 trick with 621: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 862: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 662. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 219: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 225. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 194: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 531. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 590. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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