1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 850 · 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 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 381: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 853. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
6. 6.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 940. 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 1. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
10. 10.594 + 495 =
11. 11.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.495 + 594 =
13. 13.Do the 1089 trick with 912: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 752: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 563. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 195: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 741. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 407: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 661. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 469. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 299. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 411: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 592: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 944. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
31. 31.Do the 1089 trick with 598: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 591: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.693 + 396 =
35. 35.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 289. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 937. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?

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