 ## Grade 2 Math: Counting to 1000

### Read and Write with Place Value to 1000

In this lesson, three digit numbers greater than 100 are introduced. Three-digit numbers are represented using the Place Value Table. The thousands place is introduced in order to write 10 hundreds as one thousand.

Given a three-digit number represented in the Place Value Table, students write the number in three formats: 1) the number of units, tens, and hundreds represented, 2) expanded notation that shows the value of the number in each place, and 3) standard notation.

### Counting to 1000

In this lesson, students learn how to count with three digit numbers to 1000. In the problems in the lesson, the student is given three, three-digit numbers in the counting sequence and they must write the next three numbers.

Special attention is given to numbers that cross decades when the three numbers are counted.

### Write Numbers from Words to 1000

In this lesson, students learn to write numbers from words for three digit numbers. They learn to read the word for each place value then write it as a digit. When there is no word for a given place value, the number for that place is written as zero.

In the problems in this lesson, the student is given three-digit numbers written in words and must write the number using digits.

### Write Words from Numbers to 1000

In this lesson, students learn to write numbers from the words for those numbers from 100 to 1000. They learn to read each digit in the number then write the word for that digit. When there is a zero in a number, the word for that place value is omitted.

When numbers between 20 and 99 are written, they are written with a hyphen between the words for the digits. This is also the case when numbers between 20 and 99 are used to write numbers greater than 100.

In the problems in this lesson, students are given numbers between 100 and 1000 and select the words used to write them.

### Write Numbers from Words in Context to 1000

In this lesson, students learn to recognize three-digit numbers written in words in the context of a situation.

In the problems in this lesson, they read a sentence containing words for numbers then write the number described in the sentence.

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