Question

Express $400+20+9+\frac{4}{100}+\frac{7}{1000}$ as a decimal number and find its hundreths digit.

• A. 429.47, 4
• B. 429.407, 0
• C. 429.047, 4
• D. 429.057, 7

Answer 1

The correct option is C 429.047, 4

Converting the given fractions into decimals first:
$\frac{4}{100}=0.04$
$\frac{7}{1000}=0.007$
Consider the sum
$400+20+9+\frac{4}{100}+\frac{7}{1000}$
400
+ 20
+ 9
+ 0.04
+ 0.007
________
= 429.047
Since 4 is at the second place after the decimal point, we have the hundreths, we have the hundredths digit to be 4.