Divide Whole Numbers and Fractions

Divide Whole Numbers and Fractions

Any 2 numbers with the product of 1 are called reciprocals 

(It's like turning a number upside down)

To find the reciprocal

Flip the numerator and denominator

The numerator will become denominator & denominator will become numerator

Multiple Choice

Find the reciprocal1/8

• 8
• 1/8

Multiple Choice

What is the reciprocal of 3/4?

• 4/3

• 3/4

• 1/4 lb

• none of the above

Multiple Choice

What is the recriprocal of 5

• 5/1

• 1/5

Multiple Choice

What is the recriprocal of 4/5

• 4/5

• 5/4

• 5/1

• 1/5

How to Divide Fractions

Remember KCF

Keep Change Flip

1) Keep the first fraction

2) Change division to multiplication

3) Flip the second fraction to its reciprocal 

4) Follow multiplication rules 

Multiple Choice

 $4\div\frac{2}{3}$  

•  $\frac{2}{3}$  

• 12

•  $2\frac{2}{3}$  

• 6

Fill in the Blank

 $3\ \div\frac{1}{7}$  

Fill in the Blank

 $\frac{1}{7}\div8$  

Fill in the Blank

 $10\ \div\frac{1}{2}$  

Fill in the Blank

 $\frac{1}{4}\div6$  

Multiple Choice

 $\frac{1}{2}\div9$  

•  $\frac{1}{18}$  

•  $4\ \frac{1}{2}$  

•  $18$  

•  $\frac{2}{9}$  

Multiple Choice

 $9\div\frac{1}{2}$  

•  $\frac{1}{18}$  

•  $4\ \frac{1}{2}$  

•  $18$  

•  $\frac{2}{9}$  

Multiple Choice

8 ÷ 1/4

• 1/32
• 12
• 32
• 1/12

Multiple Choice

6 ÷ 1/5

• 30
• 1/30
• 11
• 1/11

Multiple Choice

1/4 ÷ 5

• 1/20

• 1/9

• 5/20

• 1/4

Poll

How confident do you feel dividing fractions and whole numbers?

• I could teach someone else how to divide fractions and whole numbers.

• This is easy for me.

• I get it, but sometimes I make mistakes.

• I need help with this.

• I have no idea how to divide fractions and whole numbers.