1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 292 · 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 5. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.Take 963. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
9. 9.Take 831. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
11. 11.Take 240. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.594 + 495 =
13. 13.Do the 1089 trick with 537: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 396. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 186. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 598. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.495 + 594 =
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
21. 21.Do the 1089 trick with 370: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 894. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.396 + 693 =
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
27. 27.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 531: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 628: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 178: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
36. 36.Take 926. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 688. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 328. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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