### Home > CC1MN > Chapter 2 Unit 2 > Lesson CC1: 2.2.1 > Problem 2-28

2-28.

Add or subtract.

Add the numbers in the hundredths place.

Add the numbers in the tenths place. Since the sum is 2 digits, place the first digit (1) in the column to the left.

Add the numbers in the ones place. Since the sum is 2 digits, place the first digit (2) in the column to the left.

Add the numbers in the tens place.

See part (a). Be careful to line up the decimals correctly.

Since 0 is less than 4 in the hundreths place, borrow 1 from the column to the left, making the hundredths place 10 − 4 = 6.

Now the tenths place is 0 − 0 = 0.

Subtract the numbers in the ones place.

Subtract the numbers in the tens place.