1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 832 · 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.Do the 1089 trick with 128: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
4. 4.495 + 594 =
5. 5.792 + 297 =
6. 6.Do the 1089 trick with 126: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.297 + 792 =
9. 9.Take 694. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 570. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 995. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 923. 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 4. What is that number?
14. 14.Take 188. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 299. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
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 490: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 749. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
24. 24.594 + 495 =
25. 25.396 + 693 =
26. 26.Take 305. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 118: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
29. 29.Do the 1089 trick with 420: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 538. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 702. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 179. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 663. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 311: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 230. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 466. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
38. 38.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 690: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 701: reverse and subtract, then reverse that answer and add. What do you get?

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