1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 813 · 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 926: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 711. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 643: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
5. 5.693 + 396 =
6. 6.891 + 198 =
7. 7.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.792 + 297 =
9. 9.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 269. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
13. 13.594 + 495 =
14. 14.Do the 1089 trick with 318: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
17. 17.Do the 1089 trick with 701: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
19. 19.Take 722. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 815. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 982: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 194. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 812. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.495 + 594 =
25. 25.Take 942. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 570. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.297 + 792 =
29. 29.Do the 1089 trick with 986: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 289. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 144. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 865. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 224. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 219: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 952: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?

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