# 7.5 Rational Number Arithmetic

### Lesson 1

- I can compare rational numbers.
- I can use rational numbers to describe temperature and elevation.

### Lesson 2

- I can use a number line to add positive and negative numbers.

### Lesson 3

- I understand how to add positive and negative numbers in general.

### Lesson 4

- I understand what positive and negative numbers mean in a situation involving money.

### Lesson 5

- I can explain the relationship between addition and subtraction of rational numbers.
- I can use a number line to subtract positive and negative numbers.

### Lesson 6

- I can find the difference between two rational numbers.
- I understand how to subtract positive and negative numbers in general.

### Lesson 7

- I can solve problems that involve adding and subtracting rational numbers.

### Lesson 8

- I can multiply a positive number with a negative number.
- I can use rational numbers to represent speed and direction.

### Lesson 9

- I can explain what it means when time is represented with a negative number in a situation about speed and direction.
- I can multiply two negative numbers.

### Lesson 10

- I can solve problems that involve multiplying rational numbers.

### Lesson 11

- I can divide rational numbers.

### Lesson 12

- I can solve problems that involve multiplying and dividing rational numbers.
- I can solve problems that involve negative rates.

### Lesson 13

- I can add, subtract, multiply, and divide rational numbers.
- I can evaluate expressions that involve rational numbers.

### Lesson 14

- I can represent situations with expressions that include rational numbers.
- I can solve problems using the four operations with rational numbers.

### Lesson 15

- I can solve equations that include rational numbers and have rational solutions.

### Lesson 16

- I can explain what the solution to an equation means for the situation.
- I can write and solve equations to represent situations that involve rational numbers.

### Lesson 17

- I can solve problems about the stock market using rational numbers and percentages.