Compare Decimals Using a Number Line
Compare Decimals Using a Number Line is a Grade 4 math skill in enVision Mathematics, Chapter 12: Understand and Compare Decimals. Students use the number line principle that values increase left to right to compare two decimal numbers and determine which is greater or lesser.
Key Concepts
On a number line, the value of a number increases as you move from left to right. For any two decimals $a$ and $b$: If decimal $a$ is to the right of decimal $b$, then $a b$. If decimal $a$ is to the left of decimal $b$, then $a < b$.
Common Questions
How do you compare decimals on a number line?
Plot both decimals on a number line. The decimal farther to the right has a greater value. If decimal a is to the right of decimal b, then a is greater than b.
Which decimal is greater on a number line?
The decimal located farther to the right on a number line is always the greater number.
What is an example of comparing decimals on a number line?
To compare 0.4 and 0.7, plot both on a number line. Since 0.7 is to the right of 0.4, then 0.7 is greater than 0.4.
How do you compare 0.3 and 0.25 on a number line?
Plot both: 0.3 is to the right of 0.25 on the number line, so 0.3 is greater than 0.25 even though 0.3 has fewer decimal digits.
What chapter covers comparing decimals in enVision Mathematics Grade 4?
Comparing decimals using a number line is covered in Chapter 12: Understand and Compare Decimals in enVision Mathematics Grade 4.