The given figure has 7 equal parts out of which 3 are shaded.

Hence, the fraction of the shaded petals = $\frac{3}{7}$

Natural numbers from 2 to 10 are: 2, 3, 4, 5, 6, 7, 8, 9, 10

Number of Natural numbers from 2 to 10 = 9 

Prime numbers from 2 to 10: 2, 3, 5, 7

Number of Prime numbers from 2 to 10 = 4

Hence, the fraction of prime numbers from 2 to 10 = $\frac{4}{9}$

It is given that Cindy had 97 candies.

She gave Joey $\frac{23}{97}$ of candies.

The total number of candies is 97 which is the whole out of which 23  candies were given to Joey.

Hence, Joey has 23 candies.

In the figure given above, there are 14 small triangles out of which 7 are unshaded.

Hence, the fraction can be represented by the unshaded portion = $\frac{7}{14}$

There total number of cubes = 9

Number of red cubes = 3

Number of pink cubes = 2

Number of yellow cubes = 4

Number of cubes that are not yellow = 3 + 2 = 5

So, the fraction of cubes which are yellow
$=\frac{5}{9}$

One-fifth is one part of a whole, where the whole is divided into five equal parts. Hence, five one-fifths will make a whole. 

We can also see it numerically below.

$\frac{1}{5}+\frac{1}{5}+\frac{1}{5}+\frac{1}{5}+\frac{1}{5}=\frac{5}{5}=1whole$

Number of flowers in Simon's garden = 28

Number of flowers that wilted = 13

Number of flower that are still blooming = Total number of flowers - Number of flowers that wilted

Number of flowers still blooming = 28 - 13 = 15

The fraction of flowers that are still blooming = $\frac{15}{28}$

The given fractions are $\frac{18}{20}$ and $\frac{7}{20}$. 

They are like fractions because they have the same denominator.

As per the question we have to find the difference between them.

$\frac{18}{20}-\frac{7}{20}=\frac{18-7}{20}=\frac{11}{20}$

Hence, $\frac{18}{20}$ is greater than $\frac{7}{20}$ by $\frac{11}{20}$.

Equivalent fractions are fractions which have the same value and are obtained by dividing or multiplying both the numerator and the denominator of a fraction by the same number.

Now, $49÷7=7$

Therefore, $\frac{5}{7}=\frac{5\times 7}{7\times 7}=\frac{35}{49}$

Hence, the missing number is 35.

Equivalent fractions are fractions which have the same value. They are obtained by multiplying both the numerator and the denominator of a fraction by the same number.

$\frac{4}{5}=\frac{4\times 3}{5\times 3}=\frac{12}{15}$

$\frac{4}{5}=\frac{4\times 5}{5\times 5}=\frac{20}{25}$

Hence, $\frac{4}{5}$ is equivalent to $\frac{12}{15}$ and $\frac{20}{25}$.