1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 596 · 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. 1.297 + 792 =
2. 2.Do the 1089 trick with 395: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 116. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.792 + 297 =
5. 5.Take 816. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 962. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.693 + 396 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.Take 459. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
12. 12.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
15. 15.198 + 891 =
16. 16.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 623. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
19. 19.Take 371. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.495 + 594 =
21. 21.Take 683. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
23. 23.Take 127. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 674: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 510. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 742: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 775: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 244: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 247. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
32. 32.Do the 1089 trick with 905: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 628. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 722. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 914: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
37. 37.Take 238. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 186. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 802. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 289. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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