1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 548 · 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.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 991. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 297. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.792 + 297 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.693 + 396 =
10. 10.297 + 792 =
11. 11.495 + 594 =
12. 12.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
16. 16.396 + 693 =
17. 17.Do the 1089 trick with 148: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.594 + 495 =
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
21. 21.Do the 1089 trick with 408: 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 3. What is that number?
23. 23.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 128: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
27. 27.Take 901. 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 7. What is that number?
29. 29.Do the 1089 trick with 217: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.198 + 891 =
31. 31.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 628. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.891 + 198 =
37. 37.Take 136. Reverse its digits and take the smaller number away from the bigger one. 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.Take 401. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 911: reverse and subtract, then reverse that answer and add. What do you get?

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