1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 71 · 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 915: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
3. 3.594 + 495 =
4. 4.Do the 1089 trick with 699: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 225: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 790: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.297 + 792 =
9. 9.Do the 1089 trick with 491: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 530: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.891 + 198 =
12. 12.495 + 594 =
13. 13.Do the 1089 trick with 801: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 553: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 498: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 264. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 895. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.792 + 297 =
20. 20.Do the 1089 trick with 184: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.198 + 891 =
22. 22.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
24. 24.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.396 + 693 =
26. 26.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 356: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 107. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 248: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.693 + 396 =
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
33. 33.Do the 1089 trick with 163: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
36. 36.Take 893. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 751. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 239: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 325. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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