1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 782 · 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. 1.693 + 396 =
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.396 + 693 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
7. 7.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 846. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 116. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.891 + 198 =
11. 11.Take 803. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
14. 14.Take 308. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 216: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
17. 17.Do the 1089 trick with 287: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 472: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 510: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 519. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 189. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
27. 27.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.495 + 594 =
29. 29.297 + 792 =
30. 30.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 274. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 189: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.594 + 495 =
36. 36.198 + 891 =
37. 37.Do the 1089 trick with 933: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 783. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 311. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 702: reverse and subtract, then reverse that answer and add. What do you get?

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