Exploring Place Value with Numbers
Grade 4 Mathematics Understanding the Value of Each Digit Building Number Sense
What is Place Value?
Each digit in a number has a special place The place tells us the value of the digit Moving left makes a digit worth 10 times more Moving right makes a digit worth 10 times less
Build It with Blocks!
Use base-ten blocks to build numbers 1 unit cube = 1 one 1 ten rod = 10 ones 1 hundred flat = 10 tens = 100 ones 1 thousand cube = 10 hundreds = 1,000 ones
Reading Numbers: The Example 1,243
Standard form: 1,243 Word form: One thousand two hundred forty-three Expanded form: 1,000 + 200 + 40 + 3 Each digit tells us how many of that place value we have
Three Ways to Write Numbers
{"left":"Standard Form: 3,456\nWord Form: Three thousand four hundred fifty-six\nExpanded Form: 3,000 + 400 + 50 + 6","right":"Standard Form: 2,018\nWord Form: Two thousand eighteen\nExpanded Form: 2,000 + 0 + 10 + 8"}
Turn & Talk Time!
Look at the number 4,507 What does the 4 represent? What does the 5 represent? Why is there a 0 in the tens place? How would you write this in word form?
Number Detective Challenge
Find the mystery number! It has 5 thousands, 0 hundreds, 3 tens, and 7 ones Write it in standard form: ____ Write it in word form: ____ Write it in expanded form: ____
You're a Place Value Expert!
You can explain what each digit means in a number You can build numbers with base-ten blocks You can write numbers in three different ways You understand that place value helps us read big numbers Keep practicing - you're doing great!