Main content

# Unit 4: Place value and decimals

2,100 possible mastery points

Mastered

Proficient

Familiar

Attempted

Not started

Quiz

Unit test

## About this unit

To really understand how decimal numbers work, we need a deep understanding of place value. The big picture goal of these tutorials is to connect decimal place value to the idea of multiplying by 10.### Practice

- Place value namesGet 5 of 7 questions to level up!
- Value of a digitGet 5 of 7 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Practice

- Compare decimals through thousandthsGet 5 of 7 questions to level up!
- Compare decimals in different formsGet 3 of 4 questions to level up!
- Order decimalsGet 3 of 4 questions to level up!
- Compare decimals word problemsGet 3 of 4 questions to level up!

### Learn

### Practice

- Round decimals Get 5 of 7 questions to level up!
- Round decimals using a number lineGet 3 of 4 questions to level up!
- Understand decimal roundingGet 3 of 4 questions to level up!
- Round decimals word problemsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 640 Mastery points

### Learn

- No videos or articles available in this lesson

### Practice

- Multiply and divide whole numbers by 10, 100, and 1000Get 3 of 4 questions to level up!

### Learn

### Practice

- Multiply and divide decimals by 10Get 3 of 4 questions to level up!
- Multiply and divide decimals by 10, 100, and 1000Get 3 of 4 questions to level up!

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

### Practice

- Powers of tenGet 5 of 7 questions to level up!

### Learn

### Practice

- Multiply and divide by powers of 10Get 5 of 7 questions to level up!
- Understanding moving the decimalGet 5 of 7 questions to level up!

### Practice

- Compare decimal place valueGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Practice

- Regroup whole numbersGet 3 of 4 questions to level up!
- Regroup decimalsGet 3 of 4 questions to level up!

Up next for you:

Level up on all the skills in this unit and collect up to 2100 Mastery points!