1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 171 · 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 6. What is that number?
2. 2.495 + 594 =
3. 3.297 + 792 =
4. 4.594 + 495 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
6. 6.Do the 1089 trick with 784: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 599: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 306. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 109. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 270: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.198 + 891 =
15. 15.Take 630. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
18. 18.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.891 + 198 =
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
21. 21.Do the 1089 trick with 986: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 371. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 508: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 179: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 821: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
29. 29.Do the 1089 trick with 680: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
31. 31.Do the 1089 trick with 845: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 226: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 861: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 917. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 459: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
38. 38.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 168: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 580: reverse and subtract, then reverse that answer and add. What do you get?

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