4th Grade Math Review

Front

What is a fraction?

Back

A fraction represents a part of a whole. It consists of a numerator (top number) and a denominator (bottom number). For example, 1/2 means one part out of two equal parts.

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width. Formula: Area = Length × Width.

Front

What is a perimeter?

Back

The perimeter is the total distance around a shape. For a rectangle, it is calculated by adding all the sides: Perimeter = 2 × (Length + Width).

Front

What is a decimal?

Back

A decimal is a way to represent fractions using a point. For example, 0.5 is the decimal representation of 1/2.

Front

What is the difference between an acute angle and an obtuse angle?

Back

An acute angle is less than 90 degrees, while an obtuse angle is greater than 90 degrees but less than 180 degrees.

Front

What is a prime number?

Back

A prime number is a whole number greater than 1 that has no positive divisors other than 1 and itself. For example, 2, 3, 5, and 7 are prime numbers.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction. For example, 2 1/2 is a mixed number.

Front

What is the value of the expression 3 + 4 × 2?

Back

According to the order of operations (PEMDAS), you first multiply, then add. So, 4 × 2 = 8, and then 3 + 8 = 11.

Front

What is a line segment?

Back

A line segment is a part of a line that has two endpoints. It is the shortest distance between those two points.

Front

What is the difference between a square and a rectangle?

Back

A square is a rectangle with all four sides of equal length, while a rectangle has opposite sides that are equal.