Question

Some easy questions please answer thank you

Answer 1

Answer:

Estimate $\frac{5}{8}-\frac{1}{10}$: B $\frac{1}{2}$

Common denominator of $\frac{1}{4}and\frac{3}{5}$: D 20

Step-by-step explanation:

In the first question, it is asking for just an estimate.  Looking at the first fraction of $\frac{5}{8}$, you can see that this the amount is very close to $\frac{4}{8}$ which is $\frac{1}{2}$, but  $\frac{5}{8}$ would be a little more.  Since you are subtracting $\frac{1}{10}$, which would be a very small amount, the best estimate is:

B $\frac{1}{2}$

In the second question, finding a common denominator between fractions means looking for the least common multiple:

4: 4, 8, 12, 16, 20

5:  5, 10, 15, 20

So, the lowest common denominator is 20 which is answer choice D.