3rd Grade: End of Year Math Review (PARCC)

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was. For example, rounding 443 to the nearest hundred gives 400.

Front

How do you round a number to the nearest hundred?

Back

To round a number to the nearest hundred, look at the tens digit. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is a fraction?

Back

A fraction represents a part of a whole and is expressed as a numerator (top number) over a denominator (bottom number).

Front

How do you add fractions with the same denominator?

Back

To add fractions with the same denominator, keep the denominator the same and add the numerators. For example, 1/4 + 1/4 = 2/4 = 1/2.

Front

What is the formula for the perimeter of a rectangle?

Back

The perimeter of a rectangle is calculated by adding the lengths of all four sides, or using the formula P = 2(length + width).

Front

How do you calculate the perimeter of a polygon?

Back

To calculate the perimeter of a polygon, add the lengths of all its sides together.

Front

What is the perimeter of a shape with sides measuring 5 cm, 4 cm, 3 cm, and 4 cm?

Back

The perimeter is 5 cm + 4 cm + 3 cm + 4 cm = 16 cm.

Front

What is the importance of units in measurement?

Back

Units provide a standard for measuring quantities, ensuring clarity and consistency in communication of measurements.

Front

What does it mean to represent a fraction on a number line?

Back

Representing a fraction on a number line involves marking the fraction's value between whole numbers, showing its position relative to other numbers.

Front

How do you convert an improper fraction to a mixed number?

Back

To convert an improper fraction to a mixed number, divide the numerator by the denominator. The quotient is the whole number, and the remainder is the new numerator over the original denominator.