1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 204 · 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 972. 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 6. What is that number?
3. 3.297 + 792 =
4. 4.Do the 1089 trick with 215: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 123. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.792 + 297 =
7. 7.Take 345. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.891 + 198 =
9. 9.Do the 1089 trick with 179: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
11. 11.Do the 1089 trick with 429: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 832. 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 1. What is that number?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
16. 16.Take 669. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 391: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
19. 19.Take 845. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
21. 21.Do the 1089 trick with 661: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.198 + 891 =
23. 23.Take 932. 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 8. What is that number?
25. 25.Take 491. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 133. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 943. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 143. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.495 + 594 =
30. 30.Take 380. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 401. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 992. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 416. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 992: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 109. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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