Lesson 1 Introduction Fraction

Lesson 1 Introduction Fraction

Chapter Overview

In Primary 5, pupils learnt to multiply whole numbers, proper fractions, improper fractions, and mixed numbers in any combination. Pupils have also explored the relationships between fractions, mixed numbers and division expressions.

In this chapter, pupils will apply these concepts to divide proper fractions by a whole number. This will be furter extended to divide whole numbers and proper fractions by a proper fraction.

BIG IDEA

Whole number and fractions can be divided in any combinations.

LET'S RECALL

CONVERTING IMPROPER FRACTIONS AND MIXED NUMBERS

Convert

 $\frac{11}{4}$  to a mixed number.

Solution

 $\frac{11}{4}=\frac{8}{4}+\frac{3}{4}$ 

  $=2+\frac{3}{4}$  

 $=2\ \frac{3}{4}$  

Convert

 $1\ \frac{2}{5}$  to an improper fraction.

Multiple Choice

Convert the following improper fraction to mixed numbers.

 $\frac{17}{2}$  

•  $8\ \frac{2}{1}$  

•  $8\ \frac{1}{2}$  

•  $\frac{8}{2}$  

Multiple Choice

Convert the following improper fraction to mixed numbers.

 $\frac{25}{7}$  

•  $3\ \frac{4}{7}$  

•  $3\ \frac{7}{4}$  

•  $4\ \frac{3}{7}$  

Multiple Choice

Convert the following mixed numbers to improper fractions. Express your answers in their simplest forms.

 $3\ \frac{1}{5}$  

•  $\frac{17}{5}$  

•  $\frac{15}{5}$  

•  $\frac{16}{5}$  

Multiple Choice

Convert the following mixed numbers to improper fractions. Express your answers in their simplest forms.

 $2\ \frac{6}{9}$  

•  $\frac{7}{3}$  

•  $\frac{9}{3}$  

•  $\frac{8}{3}$  

Multiple Choice

Convert the following mixed numbers to improper fractions. Express your answers in their simplest forms.

 $2\ \frac{6}{9}$  

•  $\frac{7}{3}$  

•  $\frac{9}{3}$  

•  $\frac{8}{3}$  

Multiple Choice

Divide. Express each of the following as a fraction or mixed number in its simplest form.

 $8\div9$  

•  $\frac{9}{8}$  

•  $\frac{8}{9}$  

Multiple Choice

Divide. Express each of the following as a fraction or mixed number in its simplest form.

 $6\div10$  

•  $\frac{3}{5}$  

•  $\frac{5}{3}$  

•  $1\ \frac{3}{5}$  

Multiple Choice

Divide. Express each of the following as a fraction or mixed number in its simplest form.

 $21\div8$  

•  $3\ \frac{5}{8}$  

•  $\frac{5}{8}$  

•  $2\ \frac{5}{8}$  

Multiple Choice

Divide. Express each of the following as a fraction or mixed number in its simplest form.

 $33\div6$  

•  $\frac{1}{2}$  

•  $5\ \frac{1}{2}$  

•  $2\ \frac{1}{2}$  

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