Read and Write Numbers to 1,000

[MUSIC PLAYING] Mr. Santos is a band teacher. It is the end of the school year, and he is storing some of his instruments for the summer. He has a drum, a trumpet, a trombone, and a tuba. Let's help Mr. Santos.

This is a snare drum. It sounds like this.

[SNARE DRUM SOUND]

Mr. Santos purchased this drum for $319. Let's build 319 with base 10 blocks in a place value chart. We'll need 3 hundreds, one 10, and 9 ones. These base 10 blocks can help us write 319 in expanded form. Expanded form uses the value of each digit to write a number.

3 hundreds is 300, 1 ten is 10, and 9 ones is 9. When we add these numbers together, we get 319. This is expanded form.

This is a trumpet. It sounds like this.

[TRUMPET SOUND]

Mr. Santos purchased this trumpet for $570. 570 has 5 hundreds, 7 tens, and 0 ones. It looks like this in expanded form. 500 plus 70 plus 0. Great job. Now, Mr. Santos can put the snare drum and trumpet away.

This is a tuba. It sounds like this.

[TUBA SOUND]

Mr. Santos purchased this tuba for $962. Let's use a base 10 chart to look at these numbers more closely. What are the values of each digit in 962? Let's see.

900, 60, and 2. When we put a plus sign between these numbers, they become an expanded form of 962.

This is a trombone. It sounds like this.

[TROMBONE SOUND]

Mr. Santos purchased his trombone for $465. Can you put 465 in expanded form? Let's try it together.

400 plus 60 plus 5. We did it. Now Mr. Santos can put the tuba and trombone away.

Thank you for helping Mr. Santos put his instruments away for the summer. You used base 10 blocks and place value charts to help us put numbers into expanded form. Great job.