1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 47 · 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 195. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
4. 4.Take 907. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
6. 6.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.891 + 198 =
8. 8.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 127. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.297 + 792 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
13. 13.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.198 + 891 =
15. 15.Do the 1089 trick with 360: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.396 + 693 =
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
19. 19.Do the 1089 trick with 745: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 177: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 680. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 916: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 330. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 947: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
28. 28.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 470. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.792 + 297 =
32. 32.Do the 1089 trick with 126: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 166. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
35. 35.Take 297. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 628. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 198: reverse and subtract, then reverse that answer and add. What do you get?

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