1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 229 · 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 806. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.693 + 396 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.495 + 594 =
6. 6.Take 496. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 672: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.396 + 693 =
9. 9.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 183. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
12. 12.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 822: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 885. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 956. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.297 + 792 =
17. 17.792 + 297 =
18. 18.Do the 1089 trick with 772: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 559. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 844: reverse and subtract, then reverse that answer and add. 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.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
25. 25.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.594 + 495 =
28. 28.Take 913. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 246. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 225. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 722: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 419. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 845: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 986. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 519: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 704. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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