1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 810 · 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 377. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.495 + 594 =
3. 3.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 340. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.396 + 693 =
6. 6.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.297 + 792 =
8. 8.Take 215. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
10. 10.Do the 1089 trick with 200: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 577. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
14. 14.Take 893. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 378. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 307: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 301. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.891 + 198 =
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 803: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 942. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
24. 24.Take 935. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 278. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 539. 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 6. What is that number?
29. 29.792 + 297 =
30. 30.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 114. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 993: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 227. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
36. 36.693 + 396 =
37. 37.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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