Which Decimal is Greater: Mathematical Comparison Practice

Let's first convert the decimal numbers into simple fractions and compare them:

0.5 is divided by 10 because there is only one digit after the decimal point, therefore:

$0.5=\frac{5}{10}$

0.4 is divided by 10 because there is only one digit after the decimal point, therefore:

$0.4=\frac{4}{10}$

Let's then compare the numbers in the numerator:

\frac{5}{10}>\frac{4}{10}

Therefore, the larger number is 0.5.