Probability of simple events Practice Questions (Grade 7)

Question 1easy

What is the probability of rolling a 4 on a standard die? Give a simplified fraction.

$P = \dfrac{\text{favorable}}{\text{total}} = \dfrac{1}{6} = \dfrac{1}{6}$ .

Question 2easy

What is the probability of rolling an even number on a die? Give a simplified fraction.

$P = \dfrac{\text{favorable}}{\text{total}} = \dfrac{3}{6} = \dfrac{1}{2}$ .

Question 3easy

What is the probability of flipping heads on a coin? Give a simplified fraction.

$P = \dfrac{\text{favorable}}{\text{total}} = \dfrac{1}{2} = \dfrac{1}{2}$ .

Question 4easy

What is the probability of drawing an Ace from a deck? Give a simplified fraction.

$P = \dfrac{\text{favorable}}{\text{total}} = \dfrac{4}{52} = \dfrac{1}{13}$ .

Question 5easy

What is the probability of drawing a red ball from 2 red and 3 blue? Give a simplified fraction.

$P = \dfrac{\text{favorable}}{\text{total}} = \dfrac{2}{5} = \dfrac{2}{5}$ .

Question 6easy

What is the probability of the spinner landing on a shaded section (5 of 8)? Give a simplified fraction.

$P = \dfrac{\text{favorable}}{\text{total}} = \dfrac{5}{8} = \dfrac{5}{8}$ .

Question 7easy

A bag holds $4$ red marbles and $5$ green marbles. One marble is drawn at random. What is the probability it is green? Give a simplified fraction.

There are $4 + 5 = 9$ marbles in all and $5$ are green, so $P(\text{green}) = \dfrac{5}{9}$ .

Question 8easy

A standard six-sided die is rolled once. What is the probability of rolling a number greater than $4$ ? Give a simplified fraction.

The favorable faces are $5$ and $6$ , so $P = \dfrac{2}{6} = \dfrac{1}{3}$ .

Probability of simple events practice