1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 626 · 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. 1.495 + 594 =
2. 2.Take 361. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 452: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.594 + 495 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
6. 6.792 + 297 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
9. 9.Take 592. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 107: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 169: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.198 + 891 =
13. 13.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.396 + 693 =
15. 15.Do the 1089 trick with 246: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 350. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 330: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
19. 19.Take 812. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 987. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 604: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 891: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 654. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 239: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 962. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 981: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.891 + 198 =
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
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 843: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 114. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 580: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
35. 35.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 380: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 451. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 679. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 872. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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