1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 306 · 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 244. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 903: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 266. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 902. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 826. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 542. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 370: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.198 + 891 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
11. 11.Take 945. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.594 + 495 =
14. 14.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 690: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
17. 17.495 + 594 =
18. 18.Take 614. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.693 + 396 =
20. 20.Take 450. 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 7. What is that number?
22. 22.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 671. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 835. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 934: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.891 + 198 =
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
28. 28.Take 539. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 300. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
31. 31.Take 460. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 106: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 155. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 499: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
39. 39.297 + 792 =
40. 40.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?

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