Bundling Place Value Units
This Grade 4 Eureka Math skill teaches students the concept of bundling place value units — that 10 of any unit makes 1 of the next larger unit. Ten ones equal 1 ten, 10 tens equal 1 hundred, and 10 hundreds equal 1 thousand. For example, 20 tens can be bundled into 2 groups of 10 tens, making 2 hundreds. This foundational understanding of the base-10 system, covered in Chapter 1 of Eureka Math Grade 4, underpins regrouping in addition, subtraction, multiplication, and division throughout the year.
Key Concepts
When you bundle 10 of a specific place value unit, you create 1 of the next larger place value unit. $$10 \text{ ones} = 1 \text{ ten}$$ $$10 \text{ tens} = 1 \text{ hundred}$$ $$10 \text{ hundreds} = 1 \text{ thousand}$$.
Common Questions
What does bundling place value units mean?
Bundling means grouping 10 of one unit to create 1 unit of the next higher place value. For example, 10 ones bundle into 1 ten, and 10 tens bundle into 1 hundred.
How many ones make a ten?
10 ones equal 1 ten. This is the fundamental rule of the base-10 place value system.
How many tens make a hundred?
10 tens equal 1 hundred. Equivalently, 100 ones equal 1 hundred.
How many hundreds make a thousand?
10 hundreds equal 1 thousand. This follows the same bundling rule as all other place values.
How does bundling relate to regrouping in addition?
When the sum of digits in a place value column reaches 10 or more, you bundle 10 of those units into 1 unit of the next higher place, carrying that unit to the next column.
How do you bundle 20 tens?
20 tens = 2 groups of 10 tens = 2 hundreds. You can bundle them into 2 hundred-disks with no tens remaining.