Composing and Decomposing Numbers to 100,000
Learning Objective
I can break apart and put together numbers up to 100,000 using different combinations.
Key Concepts
The normal way that we see a number is called standard form, like the number 789.
Expanded form shows the values of each digit, such as 700 + 80 + 9, while expanded notation multiplies the digit by its place value, such as (7 x 100) + (8 x 10) + (9 x 1).
When decomposing numbers, 34,096 in standard form can be written as 30,000 + 4,000 + 90 + 6 in expanded form or (3 x 10,000) + (4 x 1,000) + (9 x 10) + (6 x 1) in expanded notation.
Practice Questions
This lesson includes 12 practice questions to reinforce learning.
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1. What is the standard form of a number?
2. What is the value of the digit 4 in the number 34,096?
3. Write the number 789 in expanded form.
...and 9 more questions
Educational Video
3.2A Compose and Decompose Numbers up to 100,000
Lisa Raizes