1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 297 · 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 2. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
3. 3.Take 863. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
5. 5.Take 815. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 680. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
8. 8.594 + 495 =
9. 9.Do the 1089 trick with 114: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 921: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.198 + 891 =
13. 13.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 518: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.495 + 594 =
16. 16.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 913. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 115. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 330. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 771: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 390. Reverse its digits and take the smaller number away from the bigger one. 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.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
26. 26.Take 315. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.891 + 198 =
28. 28.Do the 1089 trick with 461: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 309. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 204. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 563: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 881. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 329: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 325. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 381: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
40. 40.Do the 1089 trick with 975: reverse and subtract, then reverse that answer and add. What do you get?

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