1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 138 · 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 6. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
3. 3.Take 658. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 288: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
6. 6.891 + 198 =
7. 7.Do the 1089 trick with 208: 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.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 512: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.297 + 792 =
13. 13.Take 239. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 259. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
16. 16.Take 572. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 991. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 134: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 127: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.594 + 495 =
23. 23.Take 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 964: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 945: reverse and subtract, then reverse that answer and add. 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.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 503: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
32. 32.495 + 594 =
33. 33.Take 611. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.198 + 891 =
35. 35.Do the 1089 trick with 841: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.396 + 693 =
38. 38.Take 300. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 341: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.693 + 396 =

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