Tag: multiplication of fraction

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Multiple choice maths parts and whole multiplication of a fraction multiplication of a fractions multiplication of fraction finding the whole when a fraction is given

Reciprocal of $\displaystyle \frac{7}{5}$

  1. $\displaystyle 1\frac{2}{5}$
  2. $\displaystyle \frac{5}{7}$
  3. $\displaystyle 5\frac{2}{3}$
  4. $\displaystyle \frac{12}{5}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
In the reciprocal, numerator and denominator interchanges
So, the reciprocal of $\dfrac{7}{5}$ is $\dfrac{5}{7}$.
Hence, the answer is $\dfrac{5}{7}$.
Multiple choice maths parts and whole multiplication of a fraction multiplication of a fractions multiplication of fraction finding the whole when a fraction is given

Find the product:

$\displaystyle 1\frac{1}{3}\times 3\frac{1}{4}\times \frac{7}{8}$

  1. $\displaystyle 3\frac{18}{24}$
  2. $\displaystyle 2\frac{19}{24}$
  3. $\displaystyle 3\frac{19}{24}$
  4. $\displaystyle 2\frac{18}{24}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let's first convert the mixed fraction into simple fraction $\dfrac{4}{3},$ $\dfrac{13}{4},$ $\dfrac{7}{8}$ .

The product is 
$\dfrac{4}{3} \times \dfrac{13}{4}\times \dfrac{7}{8}=\dfrac{91}{24}$
This can also be written as $3\dfrac{19}{24}$.

Multiple choice maths parts and whole multiplication of a fraction multiplication of a fractions multiplication of fraction finding the whole when a fraction is given

If $\displaystyle 40-\frac{1}{5}\times $ ____ $= 0$, then the missing value is 

  1. $0$
  2. $\displaystyle \frac{1}{5} $
  3. $\displaystyle \frac{199}{5} $
  4. $200$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Let missing value is $x$

$40$ $-\dfrac{1}{5}\times x=0$

$40$ $=\dfrac{1}{5}\times x$

$x=200$

Hence, the answer is $200$.