MF.N.2:mathematical and real-world problems using ratio

Understanding how to represent and solve mathematical and real-world problems using rational numbers, matrices, radical expressions, and expressions written with rational exponents.

Math in Real World Problems

Rational Numbers

Rational numbers include all integers, fractions, and decimals that can be expressed as a ratio of two integers (a/b where b ≠ 0).

Multiple Choice

Real-World Problem: If you have 3/4 of a pizza and eat 1/4 more, how much pizza is left?

• 1/8

• 1/2

• 2

Math in Real World Problems

Matrices

A matrix is a rectangular array of numbers arranged in rows and columns. They are useful for representing and solving systems of equations, among other things.

Multiple Choice

Real-World Problem: Using a matrix you have created a budget with rows representing categories (Rent, Food, Savings, etc) and columns for due dates and amount owed. (Shown to the left)

How much do you pay in rent?

• $500

• $1,250.42

• $1,345.30

Math in Real World Problems

Rational Exponents

Multiple Choice

Real-World Problem: If the volume of a cube is 27 cubic units, what is the length of one of sides?

• 3

• 6

• 9