1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 107 · 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. 1.792 + 297 =
2. 2.Take 439. 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 1. What is that number?
4. 4.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
6. 6.495 + 594 =
7. 7.Take 325. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.594 + 495 =
9. 9.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 144. 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 7. What is that number?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
13. 13.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.396 + 693 =
16. 16.693 + 396 =
17. 17.297 + 792 =
18. 18.Take 712. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 804. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 560: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 341. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 230: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.198 + 891 =
26. 26.Do the 1089 trick with 356: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
28. 28.Do the 1089 trick with 795: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 851: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 894. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.891 + 198 =
32. 32.Do the 1089 trick with 610: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 349: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 450: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 825: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 973: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 805. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 985. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?

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