Building Three-Digit Numbers.
Building Three-Digit Numbers.
Use place value understanding to round whole numbers to the nearest 10 or 100.

Learning Outcomes:

    • Students will recognize that the position of a digit in a number determines its value. For example, in 543, the 5 represents 500 because it is in the hundreds place, the 4 represents 40 because it is in the tens place, and the 3 represents 3 because it is in the ones place.
    • Students will be able to compose different three-digit numbers using the same digits, understanding that changing the place of a digit changes the value of the number. For instance, using 5, 4, and 3, students can form 543, 354, 435, etc.
    • Students will decompose numbers into their place value parts. For example, 345 can be broken down as 300 + 40 + 5.
    • Students will compare numbers like 543 and 435, recognizing that 543 is greater because the 5 is in the hundreds place, giving it a higher value than when it’s in the tens or ones place.
    • Students will understand that the same digit can have different values depending on its position in the number. For example, the digit 5 represents 500 when in the hundreds place, 50 when in the tens place, and 5 when in the ones place.
    • Students will be able to use place value knowledge to build and manipulate numbers, rearranging digits to create new numbers, and understanding the value of each.
    • Students will explore how using the same digits in different positions creates new numbers, deepening their understanding of the place value system (e.g., 453 vs. 345).

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Building a Three-Digit Number:

Using 5, 4, and 3

Let’s create a three-digit number using the digits 5, 4, and 3. The value of each digit will change depending on the place (hundreds, tens, or ones) it is assigned to. Here’s how place value works:

  1. Hundreds place: The digit here represents hundreds.
  2. Tens place: The digit here represents tens.
  3. Ones place: The digit here represents ones.
Example 1: Building a number using 5,4 and 3
  • Place the 5 in the hundreds place.
  • Place the 4 in the tens place.
  • Place the 3 in ones place.

So, 543 = 500 + 40 + 3.

Example 2: Building a number using 4,3, and 5.
  • Place the 4 in the hundreds place.
  • Place the 3 in the tens place.
  • Place the 5 in the ones place.

So, 435 = 400 + 30 + 5.

Example 3: Building a number using  3,5, and 4.
  • Place the 3 in the hundreds place.
  • Place the 5 in the tens place.
  • Place the 4 in the ones place.

So, 354 = 300 + 50 + 4.

-Understanding the Pattern:

These examples show how changing the position of the digits 5, 4, and 3 creates different three-digit numbers. This helps students understand that the place value of a digit determines its value in the number:

  • Hundreds place: Multiplies the digit by 100.
  • Tens place: Multiplies the digit by 10.
  • Ones place: Keeps the digit as it is.

Let's practice solving Place values, and stay tuned with us for more content

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