Solve: 7/8 × 2⅞ × ¼ Fraction Multiplication Problem

Question

78×278×14= \frac{7}{8}\times2\frac{7}{8}\times\frac{1}{4}=

Video Solution

Solution Steps

00:00 Solve
00:03 We want to convert from a mixed number to a fraction only
00:07 We'll do this by multiplying the whole number by the denominator
00:10 and adding it to the numerator
00:14 This is the fraction, now let's continue to solve multiplication of fractions
00:27 Make sure to multiply numerator by numerator and denominator by denominator
00:36 We'll solve one multiplication at a time and then continue
00:57 We'll use long multiplication to find the numerator multiplication
01:00 This is the numerator multiplication
01:07 We'll use long multiplication to find the denominator multiplication
01:10 This is the denominator multiplication
01:13 And this is the solution to the question

Step-by-Step Solution

First, let's convert the mixed fraction to a simple fraction as follows:

78×8×2+78×14= \frac{7}{8}\times\frac{8\times2+7}{8}\times\frac{1}{4}=

Let's solve the exercise in the numerator:

78×16+78×14= \frac{7}{8}\times\frac{16+7}{8}\times\frac{1}{4}=

78×238×14= \frac{7}{8}\times\frac{23}{8}\times\frac{1}{4}=

Since the only operation in the exercise is multiplication, we'll combine everything into one exercise:

7×23×18×8×4= \frac{7\times23\times1}{8\times8\times4}=

Let's solve the exercises in the numerator and denominator:

7×2364×4=161256 \frac{7\times23}{64\times4}=\frac{161}{256}

Answer

161256 \frac{161}{256}