1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 758 · 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. 1.594 + 495 =
2. 2.Do the 1089 trick with 922: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 953: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.198 + 891 =
5. 5.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. 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 429. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.297 + 792 =
10. 10.Take 850. 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. 12.495 + 594 =
13. 13.693 + 396 =
14. 14.Do the 1089 trick with 337: 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 5. What is that number?
16. 16.Do the 1089 trick with 640: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 916. 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 1. What is that number?
21. 21.Do the 1089 trick with 680: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 276: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
24. 24.396 + 693 =
25. 25.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.792 + 297 =
27. 27.Take 549. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
29. 29.Do the 1089 trick with 821: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 984. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 954. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 923: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 375. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 883. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 286. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 961. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
38. 38.Take 428. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 402. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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