1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 29 · 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 602. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 614. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 412: 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 3. What is that number?
5. 5.Take 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 937: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
9. 9.Do the 1089 trick with 841: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.396 + 693 =
11. 11.495 + 594 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
13. 13.Take 287. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.594 + 495 =
15. 15.Take 246. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.792 + 297 =
17. 17.Do the 1089 trick with 338: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 923. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.891 + 198 =
20. 20.Do the 1089 trick with 325: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 924: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.198 + 891 =
23. 23.297 + 792 =
24. 24.Do the 1089 trick with 964: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
27. 27.Take 811. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
29. 29.Take 600. 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.Take 975. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 537: 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 6. What is that number?
35. 35.Do the 1089 trick with 648: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 188: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 422. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 560: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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