1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 259 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
2. 2.Take 866. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
4. 4.Take 470. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 487. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
7. 7.Take 570. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 936: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.198 + 891 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
12. 12.891 + 198 =
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
14. 14.Take 361. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 552. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 987. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 137: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 812. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
21. 21.Do the 1089 trick with 426: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.297 + 792 =
23. 23.Do the 1089 trick with 589: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 588. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 510: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 755. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 375: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 709: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 359. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 567. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.396 + 693 =
37. 37.Take 521. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 135. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 420: reverse and subtract, then reverse that answer and add. What do you get?

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