1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 683 · 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 4. What is that number?
2. 2.Take 802. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.198 + 891 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
5. 5.Take 540. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 614: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.297 + 792 =
13. 13.Do the 1089 trick with 982: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.495 + 594 =
16. 16.Take 521. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 294. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
22. 22.Do the 1089 trick with 597: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 942. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 943: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 632. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 680: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.396 + 693 =
28. 28.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 237: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.693 + 396 =
31. 31.891 + 198 =
32. 32.792 + 297 =
33. 33.Do the 1089 trick with 417: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 811: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 775: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
38. 38.594 + 495 =
39. 39.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 884: reverse and subtract, then reverse that answer and add. What do you get?

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