1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 355 · 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 863: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
3. 3.Do the 1089 trick with 328: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
6. 6.Take 610. 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 3. What is that number?
8. 8.891 + 198 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
10. 10.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 156: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.594 + 495 =
14. 14.Do the 1089 trick with 216: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.198 + 891 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
17. 17.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 432. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.396 + 693 =
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
23. 23.Take 451. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 219. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 932. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 388. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 987. 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 601: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 613: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 218: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 138: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 844. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.297 + 792 =
36. 36.Take 502. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 350: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.693 + 396 =
39. 39.Take 397. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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