1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 347 · 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 920: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.693 + 396 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
4. 4.Take 703. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
6. 6.Take 593. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 862. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.594 + 495 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.891 + 198 =
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
12. 12.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.297 + 792 =
14. 14.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 791. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 128. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.396 + 693 =
19. 19.Do the 1089 trick with 824: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.495 + 594 =
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
24. 24.Do the 1089 trick with 783: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 579. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
30. 30.792 + 297 =
31. 31.Do the 1089 trick with 460: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 611: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 841: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 200: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 902. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 995. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 911: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?

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