1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 274 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
2. 2.Take 240. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 529: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.792 + 297 =
5. 5.693 + 396 =
6. 6.594 + 495 =
7. 7.198 + 891 =
8. 8.Take 886. 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 2. What is that number?
10. 10.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
12. 12.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.297 + 792 =
14. 14.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 995: 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 7. What is that number?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
19. 19.Take 387. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 891. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.495 + 594 =
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
25. 25.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 744. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 801: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.396 + 693 =
29. 29.Do the 1089 trick with 588: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 735: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 608: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 876: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 934. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 391: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 580: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 409. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 390: reverse and subtract, then reverse that answer and add. 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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