1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 603 · 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 7. What is that number?
2. 2.792 + 297 =
3. 3.Do the 1089 trick with 601: 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 784: 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 6. What is that number?
7. 7.Do the 1089 trick with 662: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.693 + 396 =
9. 9.Take 745. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
11. 11.Take 309. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 228: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 662. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 983: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.594 + 495 =
17. 17.495 + 594 =
18. 18.Take 408. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 176. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.198 + 891 =
22. 22.Take 759. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 470. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 622. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 831. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 963: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 671: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 953. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 762. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 892. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.297 + 792 =
34. 34.Do the 1089 trick with 319: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 377. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
37. 37.Take 917. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 933. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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