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# Unit 9: Understand decimals

1,600 possible mastery points
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Quiz
Unit test

You've learned place value for whole numbers. Decimals are about place value for some fractions of a number. Decimals are simple with grids and number lines. Learn to place decimals on the number line, then compare them and write them as fractions.

## Writing fractions as decimals

### Practice

#### Quiz 1

Level up on the above skills and collect up to 400 Mastery points

## Decimals on the number line

### Practice

#### Quiz 2

Level up on the above skills and collect up to 480 Mastery points

## Common fractions and decimals

### Practice

#### Quiz 3

Level up on the above skills and collect up to 240 Mastery points

## Comparing decimals

### Practice

#### Quiz 4

Level up on the above skills and collect up to 160 Mastery points
Up next for you:

#### Unit test

Level up on all the skills in this unit and collect up to 1,600 Mastery points!