1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 631 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
3. 3.Take 795. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 248. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
6. 6.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 399: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 188: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 358. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 698. 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 610: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 936: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 822. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 305. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 993: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.396 + 693 =
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
19. 19.Take 288. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.792 + 297 =
21. 21.297 + 792 =
22. 22.Take 136. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
24. 24.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 184: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.495 + 594 =
27. 27.891 + 198 =
28. 28.Do the 1089 trick with 711: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 579: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 906: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 983: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 641. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 204: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 953. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 490: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 512. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 702: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 791: reverse and subtract, then reverse that answer and add. What do you get?

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