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topic E
8 hours

Multiplication Of A Fraction By A Fraction


Topic E introduces students to multiplication of fractions by fractions—both in fraction and decimal form (5.NF.4a, 5.NBT.7). The topic starts with multiplying a unit fraction by a unit fraction and progresses to multiplying two non-unit fractions.

Students use area models, rectangular arrays, and tape diagrams to model the multiplication. These familiar models help students draw parallels between whole number and fraction multiplication, as well as solve word problems. This intensive work with fractions positions students to extend their previous work with decimal-by-whole number multiplication to decimal-by-decimal multiplication.


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From of the New York State Education Department. Grade 5 Mathematics Module 4, Topic E Overview. Available from; accessed 2015-05-29.
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