# Unit 5: Arithmetic in base ten

## Lesson 1: Using decimals in a shopping context

### Learn

No videos or articles available in this lesson

### Practice

Adding & subtracting decimals word problemsGet 3 of 4 questions to level up!

## Lesson 2: Using diagrams to represent addition and subtraction

### Practice

Add decimals visuallyGet 5 of 7 questions to level up!
Subtract decimals visuallyGet 5 of 7 questions to level up!

## Lesson 4: Adding and subtracting decimals with many non-zero digits

### Practice

Adding decimals: thousandthsGet 5 of 7 questions to level up!
Subtracting decimals: thousandthsGet 5 of 7 questions to level up!

## Lesson 6: Methods for multiplying decimals

### Practice

Multiply decimals visuallyGet 5 of 7 questions to level up!

## Lesson 10: Using long division

### Practice

Division by 2-digitsGet 3 of 4 questions to level up!
Multi-digit divisionGet 3 of 4 questions to level up!

## Lesson 13: Dividing decimals by decimals

### Practice

Divide decimals visuallyGet 3 of 4 questions to level up!
Dividing decimals: hundredthsGet 3 of 4 questions to level up!
Dividing decimals: thousandthsGet 3 of 4 questions to level up!