# Unit 5: Arithmetic in base ten

## Lesson 1: Using decimals in a shopping context

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

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

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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

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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

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Multiply decimals and whole numbers visuallyGet 5 of 7 questions to level up!

## Lesson 10: Using long division

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

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## Lesson 13: Dividing decimals by decimals

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Divide decimals by whole numbers 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!