1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 276 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
2. 2.693 + 396 =
3. 3.Do the 1089 trick with 623: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 280: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 230: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 812: 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 8. What is that number?
9. 9.792 + 297 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
11. 11.Do the 1089 trick with 672: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 921: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 803: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.594 + 495 =
16. 16.891 + 198 =
17. 17.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.495 + 594 =
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
22. 22.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 983. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 705: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 602: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 267: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 446: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 570. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 795. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 246. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 183. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 913. 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 6. What is that number?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
38. 38.198 + 891 =
39. 39.Do the 1089 trick with 964: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?

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