1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 32 · 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.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 119: 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 7. What is that number?
5. 5.Do the 1089 trick with 793: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.297 + 792 =
9. 9.Take 905. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 936: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
12. 12.Do the 1089 trick with 712: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 328: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.891 + 198 =
15. 15.792 + 297 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
18. 18.594 + 495 =
19. 19.198 + 891 =
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
21. 21.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 216: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 633: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.396 + 693 =
29. 29.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 148. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 613. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 269: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.693 + 396 =
36. 36.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 360: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 468: reverse and subtract, then reverse that answer and add. What do you get?

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