1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 611 · 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 3. What is that number?
2. 2.297 + 792 =
3. 3.792 + 297 =
4. 4.Take 299. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.396 + 693 =
6. 6.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
8. 8.Take 225. 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.Do the 1089 trick with 723: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 743: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
13. 13.Do the 1089 trick with 123: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.198 + 891 =
15. 15.Take 389. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.495 + 594 =
18. 18.Take 563. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 335. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 114: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
23. 23.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 267. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 570: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 845. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 963. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 669. 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 903. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.891 + 198 =
33. 33.Take 570. Reverse its digits and take the smaller number away from the bigger one. 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.Do the 1089 trick with 973: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
40. 40.Do the 1089 trick with 641: reverse and subtract, then reverse that answer and add. What do you get?

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