MCA Math Prep - 8th grade

What is the value of @@\frac{3}{4} + \frac{1}{4}@@?

• 0.5

• 1.5

• 1

• 0.75

What is the formula for the volume of a rectangular prism?

• Volume = length × width × height.

• Volume = length + width + height.

• Volume = length × width ÷ height.

• Volume = 2 × (length + width + height).

What is the difference between whole numbers and natural numbers?

• Natural numbers include all integers, while whole numbers are only positive integers.

• Natural numbers are the set of positive integers (1, 2, 3, ...), while whole numbers include all natural numbers and zero (0, 1, 2, 3, ...).

• Whole numbers are the set of positive integers, while natural numbers include zero.

• Natural numbers are whole numbers excluding zero.

What is the probability of rolling a 3 on a standard six-sided die?

• @@rac{1}{6}@@

• @@rac{1}{3}@@

• @@rac{1}{2}@@

• @@rac{1}{4}@@

What is a rational number?

• A number that can be expressed as a fraction @@\frac{a}{b}@@, where a and b are integers and b ≠ 0.

• A number that cannot be expressed as a fraction.

• A number that is always an integer.

• A number that has a non-repeating decimal representation.

What is the least common multiple (LCM) of 4 and 6?

• 8

• 10

• 12

• 14

Convert the mixed number 3 1/4 to an improper fraction.

• @@\frac{13}{4}@@

• @@\frac{12}{4}@@

• @@\frac{11}{4}@@

• @@\frac{14}{4}@@

What is the formula for finding the mean (average) of a set of numbers?

• Mean = (sum of all values) / (number of values).

• Mean = (largest value - smallest value) / 2.

• Mean = (sum of all values) * (number of values).

• Mean = (sum of all values) + (number of values).

If a rectangle has a length of 7 cm and a width of 4 cm, what is its perimeter?

• 20 cm

• 22 cm

• 24 cm

• 18 cm

What is the greatest common divisor (GCD) of 8 and 12?

• 2

• 3

• 4

• 6