1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 461 · 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 8. What is that number?
3. 3.396 + 693 =
4. 4.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.198 + 891 =
6. 6.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 278: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 933. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.693 + 396 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
11. 11.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 709: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.297 + 792 =
16. 16.891 + 198 =
17. 17.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 537. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.594 + 495 =
21. 21.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
23. 23.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
25. 25.Take 588. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
27. 27.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
30. 30.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. 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 618. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 244: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.495 + 594 =
36. 36.Do the 1089 trick with 814: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 881: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 200: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 220. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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