Question

What is the division expression that is the same as 1/5 * 1/4 ?

A. 1/5 divide by 2
B. 1/5 divide by 3
C. 1/5 divide by 4
D. 1/5 divide by 5

Answer 1

C. 1/5 divide by 4

Explanation:

When you divide two fractions, you multiply the first fraction by the reciprocal of the other one. To find the reciprocal of the second fraction, yo just have to switch the value of the numerator and denominator (i.e. 4/1's reciprocal is 1/4).

Another important thing to note is that 1/5 x 1/4 is 1/20 because you multiply straight across numerators and denominators.

Now that we have some back ground information, let's which expression leads to 1/20!

A:

• 1/5 x 2/1
• 1/5 x 1/2
• 1/10
• Incorrect Answer Choice

B:

• 1/5 x 3/1
• 1/5 x 1/3
• 1/15
• Incorrect Answer Choice

C:

• 1/5 x 4/1
• 1/5 x 1/4
• 1/20
• Correct Answer Choice!

Therefore, the answer is C. 1/5 divide by 4.