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# Unit 1: Module 1: Place value, rounding, and algorithms for addition and subtraction

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## About this unit

"In this module, students extend their work with whole numbers. They begin with large numbers using familiar units (hundreds and thousands) and develop their understanding of millions by building knowledge of the pattern of times ten in the base ten system on the place value chart (4.NBT.1). They recognize that each sequence of three digits is read as hundreds, tens, and ones followed by the naming of the corresponding base thousand unit (thousand, million, billion)." Eureka Math/EngageNY (c) 2015 GreatMinds.org

### Learn

### Practice

- Place value blocksGet 5 of 7 questions to level up!
- Place value tablesGet 3 of 4 questions to level up!
- Compare with multiplicationGet 5 of 7 questions to level up!
- Identify value of a digitGet 5 of 7 questions to level up!
- Creating largest or smallest numberGet 5 of 7 questions to level up!
- Multiply whole numbers by 10Get 3 of 4 questions to level up!
- Divide whole numbers by 10Get 3 of 4 questions to level up!
- Multiply and divide by 10 Get 3 of 4 questions to level up!
- Place value when multiplying and dividing by 10Get 5 of 7 questions to level up!
- Write whole numbers in expanded formGet 5 of 7 questions to level up!
- Write numbers in written formGet 3 of 4 questions to level up!
- Regroup whole numbersGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 960 Mastery points

### Learn

### Practice

- Compare multi-digit numbersGet 5 of 7 questions to level up!
- Compare multi-digit numbers word problemsGet 3 of 4 questions to level up!
- Compare multi-digit numbers written in different formsGet 3 of 4 questions to level up!

### Learn

### Practice

- Round whole numbersGet 5 of 7 questions to level up!
- Round whole numbers word problemsGet 3 of 4 questions to level up!
- Round whole numbers to different place valuesGet 3 of 4 questions to level up!

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

Level up on the above skills and collect up to 160 Mastery points

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