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3rd Grade Math10 chapters | 87 lessons

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Lesson Transcript

Instructor:
*Bethany Calderwood*

Bethany has taught special education in grades PK-5 and has a master's degree in special education.

When doing math, it is important to know how to both read and write large numbers. In this lesson, you will learn how to use place value to read and write numbers with one to six digits.

Let's take a look at Benjamin, who decided to count what grew in his garden. He found 867,440 carrots. Can you read that sentence aloud? It's a tough one! But knowing how to read and write larger numbers is an essential math skill. So, let's explore how to read and write numbers with one to six digits.

All numbers are read from left to right. You can use **place value**, the value of a digit based on its position in the number, to help you read the number. Let's see how.

A single-digit number is in the ones place. The **name of a single-digit number** is simply the name of the digit. Let's read the names of single-digit numbers:

**0**is read zero**1**is read one**2**is read two**3**is read three**4**is read four**5**is read five**6**is read six**7**is read seven**8**is read eight**9**is read nine

**Two-digit numbers** extend into the tens place, which is the second digit from the right. Reading a two-digit number requires knowing a variety of number names.

The two-digit numbers beginning in 1 each have a unique name, so you simply need to memorize each. To **read two-digit numbers** beginning with 2 through 9, use the name of the value of the tens place plus the name of the digit in the ones place. Let's read some two-digit numbers beginning in 1 and some beginning in 2 through 9:

**10**is read ten**11**is read eleven**12**is read twelve**13**is read thirteen**14**is read fourteen**15**is read fifteen**16**is read sixteen**17**is read seventeen**18**is read eighteen**19**is read nineteen**20**is read twenty**30**is read thirty**40**is read forty**50**is read fifty**60**is read sixty**70**is read seventy**80**is read eighty**90**is read ninety

Now, let's try reading a list of items Benjamin found in his garden:

**45**slugs is read forty-five slugs**96**pumpkins is read ninety-six pumpkins**27**ladybugs is read twenty-seven ladybugs

**Three-digit numbers** extend into the hundreds place, which is the third digit from the right. To **read a three-digit number**, name the first digit, add the word ''hundred,'' and then read the rest of the number:

**300**tomatoes is read three hundred tomatoes**777**heads of lettuce is read seven hundred seventy-seven heads of lettuce

**Four-digit numbers** extend into the thousands place, which is the fourth digit from the right. To **read a four-digit number**, name the first digit, say the word ''thousand,'' and then read the rest of the number:

**4,000**radishes is read four thousand radishes**8,122**peppers is read eight thousand one hundred twenty-two peppers

**Five-digit numbers** extend into the ten-thousands place, which is the fifth digit from the right. To **read a five-digit number**, read the first two digits the way you would read a two-digit number, add the word ''thousand,'' and read the rest of the number:

**23,000**earthworms is read twenty-three thousand earthworms**12,212**ladybugs is read twelve thousand two hundred twelve ladybugs

**Six-digit numbers** extend into the hundred-thousands place, which is the sixth digit from the right. To **read a six-digit number**, read the first three digits the way you would read a three-digit number. Then add the word ''thousand,'' and then read the rest of the number:

**300,000**string beans is read three hundred thousand string beans**918,208**ants is read nine hundred eighteen thousand two hundred eight ants

To **write a number**, determine the place value of the first digit, and then write the rest of the numbers accordingly. For example:

*Benjamin found*. Make sure the 8 goes in the thousands place with three empty spots to the right, like this: 8 _ _ _. Because there are no other digits named, use zeroes to hold the other places. Eight thousand is written 8,000.**eight thousand**peapods

Here's another example:

- Let's write
The 9 needs to go in the hundreds place with two empty spots to the right, like this: 9 _ _. The ninety-six should be written with a 9 in the tens place and a 6 in the ones place. So nine hundred ninety-six is written: 996.**nine hundred ninety-six**beets.

When you **read numbers**, use place value, or the value of a digit based on its position in the number, to read the number from left to write. When you **write numbers**, first determine the place value of the first digit, and then write the number.

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3rd Grade Math10 chapters | 87 lessons

{{courseNav.course.topics.length}} chapters | {{courseNav.course.mDynamicIntFields.lessonCount}} lessons | {{course.flashcardSetCount}} flashcard set{{course.flashcardSetCoun > 1 ? 's' : ''}}

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