1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 197 · 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 791. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.693 + 396 =
3. 3.Do the 1089 trick with 902: 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 8. What is that number?
5. 5.495 + 594 =
6. 6.891 + 198 =
7. 7.198 + 891 =
8. 8.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.594 + 495 =
10. 10.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 652: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
13. 13.Take 288. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 905: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 297. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
19. 19.Take 961. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.396 + 693 =
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
22. 22.Do the 1089 trick with 158: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.792 + 297 =
25. 25.Do the 1089 trick with 972: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 157. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 934. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 230. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 167. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 725. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 143: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 765: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
35. 35.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 165: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 901: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 330: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.297 + 792 =

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