• ## CHAPTER 1: PLACE VALUE, ADD & SUBTRACT TO A MILLION

In Chapter 1 students will:
• Model the 10-1 relationship among place-value positions in the base-ten number system
• Read and write whole numbers in standard, word, and expanded form
• Compare and order whole numbers
• Round a whole number to any place
• Add & subtract whole numbers; use estimation to determine if solutions are reasonable

Vocabulary:
• place value – the value of a digit in a number, based on the location of the digit
• digit – any single number; 0-9
• standard form – a way to write numbers by using the digits 0-9 with each digit having a place value
• word form – a way to write numbers by using words
• expanded form – a way to write numbers by showing the value of each digit
• period – each group of three digits separated by commas in a multi-digit number
• difference –  the answer to a subtraction problem
• compare –  to describe whether numbers are equal to, less than, or greater than each other
• order –  a particular arrangement or placement of things one after the other
• estimate – a number close to an exact amount
• round – to replace a number with another number that tells about how many or how much

Chapter 1 Standards:  Number and Operations in Base Ten

Generalize place value understanding for multi-digit whole numbers;
CC.4.NBT.1    Recognize that in a multi-digit while number, a digit in one place represents ten times what it represents in the place to its right.

Generalize place value understanding for multi-digit whole numbers;
CC.4.NBT.2    Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form.  Compare two multi-digit numbers based on meaning of the digits in each place using >, =, and < symbols to record the results of comparisons.

Generalize place value understanding for multi-digit whole numbers;
CC.4.NBT.3    Use place value understanding to round multi-digit whole numbers to any place.

Use place value understanding and properties of operations to perform multi-digit arithmetic;
CC.4.NBT.4     Fluently add and subtract multi-digit whole numbers using the standard algorithm.
• Chapter 1 videos:

Lesson 1.1  Model Place Value Relationships (CC.4.NBT.1)
Lesson 1.2  Read and Write Numbers (CC.4.NBT.2)
Lesson 1.3  Compare and Order Numbers (CC.4.NBT.2)
Lesson 1.4  Round Numbers (CC.4.NBT.3)
Lesson 1.5  Investigate - Rename Numbers (CC.4.NBT.1)
Lesson 1.6  Add Whole Numbers (CC.4.NBT.4)
Lesson 1.7  Subtract Whole Numbers (CC.4.NBT.4)
Lesson 1.8  Comparison with Addition and Subtraction (CC.4.NBT.4)