1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 33 · 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 903. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 821. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 599. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 885: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.594 + 495 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
8. 8.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 260: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
11. 11.Do the 1089 trick with 806: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.495 + 594 =
13. 13.Do the 1089 trick with 992: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 560: 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 5. What is that number?
16. 16.891 + 198 =
17. 17.Take 220. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 184. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 567. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.792 + 297 =
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
23. 23.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 916: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
28. 28.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.297 + 792 =
30. 30.Take 189. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 387: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 280: reverse and subtract, then reverse that answer and add. 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.Do the 1089 trick with 104: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 715: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 643. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 244: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 507: reverse and subtract, then reverse that answer and add. What do you get?

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