1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 676 · 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 980: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Do the 1089 trick with 853: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 881: 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 4. What is that number?
5. 5.Do the 1089 trick with 119: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.495 + 594 =
7. 7.396 + 693 =
8. 8.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
10. 10.Take 765. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.594 + 495 =
12. 12.693 + 396 =
13. 13.198 + 891 =
14. 14.Do the 1089 trick with 560: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
16. 16.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
18. 18.Take 149. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 349. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.792 + 297 =
21. 21.Do the 1089 trick with 422: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 501: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.297 + 792 =
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
25. 25.Take 218. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 688. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 924. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 389: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 782. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 681: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 832: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 277. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?

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