1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 697 · 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 592. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.693 + 396 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.Do the 1089 trick with 175: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 117. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
7. 7.Take 832. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.198 + 891 =
9. 9.891 + 198 =
10. 10.Take 234. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
12. 12.Take 723. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.495 + 594 =
15. 15.Do the 1089 trick with 176: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.792 + 297 =
18. 18.Take 751. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.297 + 792 =
20. 20.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
22. 22.Do the 1089 trick with 528: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 689. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 995. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 215. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 340: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 593. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
30. 30.Do the 1089 trick with 947: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 613. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 926. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.396 + 693 =
35. 35.Do the 1089 trick with 562: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 983. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
38. 38.Take 826. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 812: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?

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