1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 247 · 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 648: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.495 + 594 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.297 + 792 =
5. 5.Do the 1089 trick with 614: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.198 + 891 =
9. 9.Do the 1089 trick with 278: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 480: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 650. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.693 + 396 =
13. 13.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 904. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
16. 16.Do the 1089 trick with 552: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.594 + 495 =
18. 18.Do the 1089 trick with 790: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 845: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
22. 22.Do the 1089 trick with 158: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 205: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 862. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 380: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 801: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
28. 28.Take 230. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 951: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 844: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 395: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 503. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 570: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 136: reverse and subtract, then reverse that answer and add. What do you get?

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