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In this tutorial we'll really dissect numbers to think about what they represent, including a number's place value(s) and how it is expressed in standard and composite form. Common Core Standards: 4.NBT.A.1 , 4.NBT.A.2
When finding the place value of a particular number, it helps to write out exactly what the number means. Listen as we explain in this video.
Here's a BIG number that needs to be expressed in standard form. Can you do this example with us? I bet you can!
What is the "expanded" form of a number? Take a big number and break it down to its ones, tens, hundreds, and other place values and you have expanded form. Not sure what we mean? No worries. We'll explain.
Identify the place-value of a digit. Rewrite a written number in numerals.
When asked to compare the place values in a number, remember this simple fact: each step up in place value results in an increase of a factor of ten. Watch this great explanation and become a pro.
Here we have a few example exercises in which we are asked to compare place values and determine which are larger or smaller, and by what factor of ten. Let's do it together.
Recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right.
Thinking about numbers as expressions of different place values is really helpful. In this example we'll look at regrouping a number by different place values.
Which number is bigger? Which number is smaller? Are they equal? Use your knowledge of place value to find the answer.
Taking numbers and moving them into different place values to create the highest (and lowest) numbers possible.
Identify what each digit in a multi-digit number represents.