1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 341 · 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. 1.594 + 495 =
2. 2.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
4. 4.396 + 693 =
5. 5.Take 381. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 832: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 823. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 993: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
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 218: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 873. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 225. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 127. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
17. 17.Take 540. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 882. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 318. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 874. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 783. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 269: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 855: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 468. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.693 + 396 =
28. 28.198 + 891 =
29. 29.Take 418. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
32. 32.Do the 1089 trick with 835: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
34. 34.297 + 792 =
35. 35.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 268. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 912: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 688: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.495 + 594 =
40. 40.Do the 1089 trick with 208: reverse and subtract, then reverse that answer and add. What do you get?

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