4th Grade Math Review

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 the perimeter of a rectangle?

Back

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

Front

How do you convert a number in words to standard form?

Back

To convert a number in words to standard form, identify the place values and write the digits accordingly. For example, 'six thousand, four hundred forty-seven' is written as 6447.

Front

What is a fraction?

Back

A fraction represents a part of a whole and is written as 'a/b', where 'a' is the numerator (part) and 'b' is the denominator (whole).

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal as a fraction with a denominator of 10, 100, etc., depending on the number of decimal places, and simplify if possible.

Front

What is the relationship between fractions and decimals?

Back

Fractions and decimals are two ways to represent the same value. For example, 0.5 is equivalent to the fraction 1/2.

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex). It is measured in degrees.

Front

What is a right angle?

Back

A right angle measures exactly 90 degrees. It is formed when two lines are perpendicular to each other.

Front

What is the most common capacity in a data set?

Back

The most common capacity in a data set is called the mode. It is the value that appears most frequently.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction, such as 3 1/2, which means 3 whole parts and 1/2 of another part.