1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 26 · 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. 1.594 + 495 =
2. 2.297 + 792 =
3. 3.396 + 693 =
4. 4.Do the 1089 trick with 679: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
6. 6.Take 330. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 428: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 238. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
10. 10.Do the 1089 trick with 340: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.693 + 396 =
12. 12.Do the 1089 trick with 408: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 714. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 149. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 670: 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 5. What is that number?
19. 19.Do the 1089 trick with 230: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 965. 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 2. What is that number?
22. 22.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 926: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 478. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 639: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 896. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 411. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 531. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 288: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 447: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 731. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.495 + 594 =
34. 34.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 671. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 982. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 310. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?

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