Math Midterm Practice

Front

What is an equivalent ratio?

Back

An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different. For example, the ratios 1:2 and 2:4 are equivalent.

Front

How do you find an unknown value using equivalent ratios?

Back

To find an unknown value using equivalent ratios, set up a proportion and cross-multiply to solve for the unknown.

Front

What is an ordered pair in a coordinate system?

Back

An ordered pair is a pair of numbers used to locate a point on a coordinate plane, written in the form (x, y).

Front

What does LCM stand for?

Back

LCM stands for Least Common Multiple, which is the smallest multiple that two or more numbers share.

Front

How do you find the LCM of two numbers?

Back

To find the LCM of two numbers, list the multiples of each number and identify the smallest multiple they have in common.

Front

What is a statistical question?

Back

A statistical question is one that anticipates variability in the data and can be answered by collecting data.

Front

What is the difference between a statistical question and a non-statistical question?

Back

A statistical question expects variability in the data (e.g., 'What is the average height of students in a class?'), while a non-statistical question has a fixed answer (e.g., 'What is the height of John?').

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, often expressed as 'a to b' or a:b.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor.

Front

What is the purpose of using ratios in real-life situations?

Back

Ratios help compare quantities and understand relationships between different values, such as in recipes, maps, and financial calculations.