1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 745 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
2. 2.Take 713. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.693 + 396 =
4. 4.Do the 1089 trick with 985: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 752: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 568. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
10. 10.Take 709. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.495 + 594 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
13. 13.Take 842. 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 2. What is that number?
15. 15.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 188: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 265. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 500. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.594 + 495 =
20. 20.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 205. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.198 + 891 =
23. 23.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.396 + 693 =
26. 26.297 + 792 =
27. 27.792 + 297 =
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
29. 29.Take 422. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 802: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 753: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.891 + 198 =
33. 33.Take 866. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 824: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 963: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 289: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 210: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 531: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 210. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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