a. Four hundred twenty-one and seven tenths.
b. Twenty-four and seven hundred eighty-four thousandths.
c. One and two thousand four hundred eighteen ten-thousandths.
Decimals are added and subtracted in the same way as whole numbers, but you have to be
careful to keep the decimal points lined up.
a. To add: .603 + 1.09, we must the decimal points.
the decimal points are
a. To subtract: 9.6241 - .012, we would line up the
are lined up.