Fractions

Roughly speaking, a fraction is a quantity that cannot be represented by a whole number.

Why do we need fractions?

Consider the following scenario.

Can you finish the whole cake? If not, how much of the cake did you eat?1 is not the answer, neither is 0.

This suggests that we need a new kind of number.

Parts of a Fraction

3

4

= the number of parts

= the total number of parts that equal a whole

Parts of a Fraction

3

4

= numerator

= denominator

Which number is Encircled?

3

4 = denominator

Which number is Encircled?

3

4

= numerator

¾ looks like

1/43

4 1/4

1/4

¾ looks like

1/43

4 1/4

1/4

¾ looks like

3

4

1/4

1/4

1/4

What fraction of the balls is green?

3

4

What fraction of the balls is blue?

1

4

What fraction of the balls is green?

1

6

What fraction of the balls is blue?

4

6

What fraction of the rectangle is green?

4

6

What fraction of the rectangle is green?

2

6

What fraction of the pie is green?

4

4

What fraction of the pie is green?

3

4

What fraction of the musical instruments have strings?

2

5

What fraction of the fish have stripes?

3

5

What fraction of the arrowshit the bullseye?

1

3

What fraction of the pins areknocked down?

29

Mixed Number

A mixed number has a part that is a whole number and a part that is a fraction.

= 1 34

What is the mixed number?

= 3 34

Improper Fraction

A fraction in which the numerator is greater than the denominator.

=84

What is the improper fraction?

= 154