1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 926 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
2. 2.Do the 1089 trick with 360: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 621: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.891 + 198 =
8. 8.Take 973. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
10. 10.Do the 1089 trick with 713: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.693 + 396 =
12. 12.Take 308. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 146: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.594 + 495 =
15. 15.Take 612. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.495 + 594 =
18. 18.Take 133. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
22. 22.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 561. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.297 + 792 =
25. 25.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 573. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 662. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 422: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 802. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 507. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.198 + 891 =
32. 32.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 815: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 689. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 115: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?

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