1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 351 · 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 438. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.495 + 594 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
4. 4.Take 644. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 147. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 936: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
9. 9.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 228: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 719: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 174. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
14. 14.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
16. 16.198 + 891 =
17. 17.693 + 396 =
18. 18.Do the 1089 trick with 562: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
21. 21.Take 215. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
24. 24.Take 903. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 157: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
27. 27.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 641. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 197: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.396 + 693 =
37. 37.Do the 1089 trick with 339: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 517: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 139. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 480. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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