1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 821 · 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.Do the 1089 trick with 891: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.792 + 297 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
4. 4.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 771. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 234: 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 6. What is that number?
8. 8.495 + 594 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
11. 11.Take 166. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.693 + 396 =
13. 13.Take 956. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 157. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.396 + 693 =
16. 16.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.891 + 198 =
18. 18.Take 177. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 164: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
23. 23.594 + 495 =
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. 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.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 680: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 520: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 751: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.297 + 792 =
32. 32.Do the 1089 trick with 681: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.198 + 891 =
34. 34.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 299. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 604. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 419. 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.Do the 1089 trick with 295: reverse and subtract, then reverse that answer and add. What do you get?

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