Question

Which decimal number does the arrow represent?

• A. $6.380$
• B. $6.378$
• C. $6.375$
• D. $6.374$

Answer 1

Answer: (B)

$6.378$

Let the point $6.37$ is marked as $A$ and $6.38$ is marked as $B$

Length $AB=6.38-6.37=.01$

Number of units between $A$ and $B$ $=10$

Length of each unit $=\frac{.01}{10}=.001$

Given point is $8$ units forward from $6.37$

So, the location of given point $=6.37+.001\times 8=6.378$.

Hence, option B is correct.