How do you calculate volume with cubes of fraction lengths? I'm doing some exercises on Khanacademy.org and I keep having trouble with one exercise. The questions are like this: how many 1/4cm cubes does it take to fill a prism if the prism is 1cm xx 7/4cm xx 2cm? I consistently get these wrong and Khan academy's explanations aren't working for me. I've tried converting all the side lengths to multiples(?) of 1/4, such as 4/4xx7/4xx8/4 and multiplying but I still get the wrong answer. How do I calculate this?

Which expression has both 8 and n as factors???

One number is 2 more than 3 times another. Their sum is 22. Find the numbers
8, 14
5, 17
2, 20
4, 18
10, 12

Perform the indicated operation and simplify the result. Leave your answer in factored form
${\displaystyle \left[\frac{(4x-8)}{(-3x)}\right].\left[\frac{12}{(12-6x)}\right]}$

An ordered pair set is referred to as a ___?

Please, can u convert 3.16 (6 repeating) to fraction.

Write an algebraic expression for the statement '6 less than the quotient of x divided by 3 equals 2'.
A) $6-<!--\; -\; -->\frac{x}{3}=2$
B) $\frac{x}{3}-<!--\; -\; -->6=2$
C) 3x−6=2
D) $\frac{3}{x}-<!--\; -\; -->6=2$

Find: $2.48÷4$.

Multiplication $999\times <!--\; \times \; -->999$ equals.

Solve: (128÷32)÷(−4)=
A) -1
B) 2
C) -4
D) -3

What is ${\displaystyle 0.78888.....}$ converted into a fraction? ${\displaystyle \left(0.7\overline{8}\right)}$

The mixed fraction representation of 7/3 is...

How to write the algebraic expression given: the quotient of 5 plus d and 12 minus w?

Express 200+30+5+4100+71000 as a decimal number and find its hundredths digit.
A)235.47,7
B)235.047,4
C)235.47,4
D)234.057,7

Find four equivalent fractions of the given fraction:$\frac{6}{12}$

How to find the greatest common factor of ${\displaystyle 80x^3,30y{x}^2}$?