1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 956 · 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. 1.198 + 891 =
2. 2.Take 921. 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 4. What is that number?
4. 4.693 + 396 =
5. 5.Take 844. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
9. 9.Take 249. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
11. 11.Take 641. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 167. 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 5. What is that number?
15. 15.Take 987. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 782. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 886: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 395. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 216: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.792 + 297 =
21. 21.Take 128. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.594 + 495 =
23. 23.495 + 594 =
24. 24.Take 680. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 731. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 639. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.297 + 792 =
29. 29.Take 831. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 952: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 802: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 843: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 347. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 723. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
40. 40.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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