1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 706 · 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 177. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 428. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.594 + 495 =
4. 4.297 + 792 =
5. 5.891 + 198 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
7. 7.Take 611. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.693 + 396 =
9. 9.396 + 693 =
10. 10.198 + 891 =
11. 11.Do the 1089 trick with 227: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 630. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
15. 15.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 733. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 407. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.495 + 594 =
19. 19.Take 460. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 597: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 739: 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 1. What is that number?
23. 23.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 478. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 561: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 176. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
30. 30.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
33. 33.Do the 1089 trick with 692: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 993: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 590. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
38. 38.Take 557. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 258. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 991. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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