1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 806 · 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. 1.792 + 297 =
2. 2.Take 439. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 752: 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 2. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
7. 7.Do the 1089 trick with 219: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 310: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 503: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 623: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 104. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
15. 15.693 + 396 =
16. 16.594 + 495 =
17. 17.495 + 594 =
18. 18.396 + 693 =
19. 19.198 + 891 =
20. 20.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 387. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 977: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 792. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
25. 25.Take 275. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
27. 27.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
29. 29.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 528. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 743. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.891 + 198 =
34. 34.Do the 1089 trick with 854: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 690: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 763: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 348. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 311. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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