1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 984 · 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 220. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.594 + 495 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
4. 4.Do the 1089 trick with 683: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
6. 6.693 + 396 =
7. 7.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
12. 12.Take 582. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 279. 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 2. What is that number?
15. 15.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 219. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 806. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.891 + 198 =
20. 20.Take 458. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 114. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 339. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.198 + 891 =
25. 25.396 + 693 =
26. 26.297 + 792 =
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
28. 28.495 + 594 =
29. 29.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 703: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 512: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 753. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 126. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 300: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 198. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?

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