OST Review

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: \( \text{Area} = \frac{1}{2} \times \text{base} \times \text{height} \)

Front

How do you simplify the expression 4x + 2x + 9?

Back

Combine like terms: \( 4x + 2x = 6x \), so the simplified expression is \( 6x + 9 \).

Front

Write 5 x 5 x 5 x 5 in exponential form.

Back

The exponential form is \( 5^4 \).

Front

How do you order the numbers -10, 15, -5, 6 from least to greatest?

Back

The order from least to greatest is: -10, -5, 6, 15.

Front

What is an equivalent ratio to 1 : 2?

Back

An equivalent ratio is 2 : 4.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form.

Front

What is the difference between a prime number and a composite number?

Back

A prime number has exactly two distinct positive divisors: 1 and itself. A composite number has more than two positive divisors.

Front

What is the order of operations in mathematics?

Back

The order of operations is: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Front

What is the value of the expression 3(2 + 4)?

Back

Using the order of operations, first calculate inside the parentheses: 2 + 4 = 6. Then multiply: 3 x 6 = 18.