1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 510 · 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 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
4. 4.297 + 792 =
5. 5.Do the 1089 trick with 563: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.198 + 891 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
8. 8.495 + 594 =
9. 9.Take 399. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.792 + 297 =
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
12. 12.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 833. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 557. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 448. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
21. 21.Do the 1089 trick with 866: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.396 + 693 =
23. 23.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.693 + 396 =
26. 26.891 + 198 =
27. 27.Take 189. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 369. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 268: 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 7. What is that number?
31. 31.Do the 1089 trick with 125: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 156: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 249. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 699: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 349: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 825. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
38. 38.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
40. 40.594 + 495 =

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