Associate a fraction with division and calculate decimal fraction equivalents [for example, 0.375] for a simple fraction [for example, 3/8 ]

What this means, in plain words

Two fractions are equivalent when they are worth the same amount even though the numbers look different, such as one half and two quarters.

A decimal writes parts of a whole using the places after the point: tenths, then hundredths, then thousandths.

A fraction describes part of a whole, or part of a set, once the whole has been split into equal pieces.