1. The problem displays four subtraction problems arranged in a grid, each showing digits aligned by place value columns labeled Hundreds (H), Tens (T), and Ones (O). 2. Let's solve each subtraction vertically and explain the process. Top-left box: $$ 525 - 25 = 500 $$ Subtracting 25 from 525 gives 500. Top-right box: $$ 570 - 231 = 339 $$ Subtract each place value: - Ones: 0 - 1 cannot be done, borrow 1 Ten making Ones 10 - 1 = 9 - Tens: 6 (from 7-1 because of borrow) - 3 = 3 - Hundreds: 5 - 2 = 3 Thus, 570 - 231 = 339. Bottom-left box: $$ 618 - 149 = 469 $$ Subtract each place value: - Ones: 8 - 9 cannot be done, borrow 1 Ten making Ones 18 - 9 = 9 - Tens: 0 (1-1 borrowed) - 4 cannot be done, borrow 1 Hundred making 10 - 4 = 6 - Hundreds: 5 (6-1 borrowed) - 1 = 4 So, 618 - 149 = 469. Bottom-right box: $$ 317 - 298 = 19 $$ Subtract each place value: - Ones: 7 - 8 cannot be done, borrow 1 Ten making 17 - 8 = 9 - Tens: 0 (1 borrowed) - 9 cannot be done, borrow 1 Hundred making 10 - 9 = 1 - Hundreds: 2 (3-1 borrowed) - 2 = 0 Answer is 19 (only Tens and Ones place because Hundred is 0). 3. The rounded rectangle showing "9" corresponds to the Ones digit of the last subtraction result. Final answers are: - Top-left: 500 - Top-right: 339 - Bottom-left: 469 - Bottom-right: 19