1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 556 · 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 329. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.297 + 792 =
3. 3.Do the 1089 trick with 366: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.198 + 891 =
6. 6.Take 408. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.891 + 198 =
8. 8.Do the 1089 trick with 476: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.495 + 594 =
10. 10.Do the 1089 trick with 916: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 961. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.792 + 297 =
13. 13.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 689. 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 1. What is that number?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
17. 17.Take 902. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 644. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 452. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 900. 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.Take 573. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 249: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 189. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.396 + 693 =
28. 28.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.594 + 495 =
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
31. 31.Take 844. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
33. 33.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
35. 35.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 328. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
38. 38.Do the 1089 trick with 814: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 194: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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