Question

1. ten and two tenths
2. four hundred one and

four ten - thousandths

1. five thousand two

hundred eight and one
thousand ten -
thousandths

Explanation:

Step1: Convert "Ten and two tenths"

Ten = 10, two tenths = $\frac{2}{10}=0.2$. Sum: $10 + 0.2 = 10.2$

Step2: Convert "Four hundred one and four ten-thousandths"

Four hundred one = 401, four ten-thousandths = $\frac{4}{10000}=0.0004$. Sum: $401 + 0.0004 = 401.0004$

Step3: Convert "Five thousand two hundred eight and one thousand ten-thousandths"

Five thousand two hundred eight = 5208, one thousand ten-thousandths = $\frac{1000}{10000}=0.1$. Sum: $5208 + 0.1 = 5208.1$

Answer:

1. $10.2$
2. $401.0004$
3. $5208.1$