1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 780 · 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. 1.891 + 198 =
2. 2.Take 427. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 411: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 608: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 774: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.495 + 594 =
8. 8.Take 310. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 618. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
12. 12.Take 436. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.693 + 396 =
15. 15.Take 289. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
17. 17.Do the 1089 trick with 523: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.594 + 495 =
19. 19.396 + 693 =
20. 20.198 + 891 =
21. 21.Take 923. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 399. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 629. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 315: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
27. 27.Take 569. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 927. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
31. 31.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 995. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
34. 34.Take 791. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 119: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 361. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 489. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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