1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 4 · 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 805. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.198 + 891 =
3. 3.Do the 1089 trick with 891: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 913: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 824: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 936: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.693 + 396 =
9. 9.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 558: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 977. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 977: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 810. 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 7. What is that number?
15. 15.Do the 1089 trick with 482: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.594 + 495 =
17. 17.Do the 1089 trick with 982: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 719. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 337: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 469. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
24. 24.Do the 1089 trick with 916: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.495 + 594 =
26. 26.Do the 1089 trick with 158: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 501: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
29. 29.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.891 + 198 =
32. 32.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.396 + 693 =
34. 34.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
37. 37.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 511. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
40. 40.Do the 1089 trick with 275: reverse and subtract, then reverse that answer and add. What do you get?

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