1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 301 · 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 379: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
3. 3.198 + 891 =
4. 4.Take 669. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.792 + 297 =
6. 6.297 + 792 =
7. 7.Take 650. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 775: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
13. 13.Do the 1089 trick with 985: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 692: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 962. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 468: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
21. 21.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 702: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 157. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 378. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
26. 26.594 + 495 =
27. 27.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.891 + 198 =
30. 30.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 118. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 360: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 673. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 198. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
38. 38.Do the 1089 trick with 267: 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 8. What is that number?
40. 40.Take 298. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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