multiply simple pairs of proper fractions, writing the answer in its simplest form [for example, 1/4 × 1/2 = 1/8]

Statutory requirement

Pupils should be taught to multiply simple pairs of proper fractions, writing the answer in its simplest form [for example, 1/4 × 1/2 = 1/8]

Source: Department for Education, National curriculum in England: mathematics programmes of study. Crown copyright information reproduced under the Open Government Licence v3.0.