1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 546 · 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.Do the 1089 trick with 460: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 632. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
4. 4.198 + 891 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
6. 6.396 + 693 =
7. 7.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.297 + 792 =
9. 9.Take 227. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 350: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 498. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 133. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.891 + 198 =
14. 14.Take 984. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
17. 17.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
20. 20.Do the 1089 trick with 214: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 276. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 126: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 430. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 560: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.594 + 495 =
28. 28.Take 591. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.495 + 594 =
30. 30.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 976: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 208: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 175. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 457: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 275: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 634. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.693 + 396 =
38. 38.Do the 1089 trick with 552: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
40. 40.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?

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