1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 530 · 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 903: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.594 + 495 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
4. 4.Take 528. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.891 + 198 =
6. 6.Take 699. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 759: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 981: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.198 + 891 =
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
12. 12.Take 527. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 802: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
17. 17.Take 733. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 663. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 275: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 115: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 724. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 906: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 185: reverse and subtract, then reverse that answer and add. 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
26. 26.Do the 1089 trick with 517: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.297 + 792 =
28. 28.Do the 1089 trick with 469: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 982: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
31. 31.Take 457. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 580. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.396 + 693 =
34. 34.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 400: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.792 + 297 =
38. 38.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 244. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 186: reverse and subtract, then reverse that answer and add. What do you get?

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