1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 682 · 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 730: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 590. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 357: 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 6. What is that number?
5. 5.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 466. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 701: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.198 + 891 =
10. 10.297 + 792 =
11. 11.891 + 198 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
13. 13.594 + 495 =
14. 14.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 359: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 682. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
18. 18.Do the 1089 trick with 548: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 177. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 611. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
23. 23.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.396 + 693 =
25. 25.Take 460. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 553: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 289: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 492. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 992: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 156: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 254: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 580: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 956. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 174: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 926. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?

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