Solve the Fraction Addition: 1/4 + 1/8 Step by Step

Question

Solve the following exercise:

14+18=? \frac{1}{4}+\frac{1}{8}=\text{?}

Video Solution

Solution Steps

00:00 Solve
00:03 Multiply the fraction by 2 to get a common denominator
00:07 Remember to multiply both numerator and denominator
00:15 Calculate the multiplications
00:20 Add under common denominator
00:24 Calculate the numerator
00:28 And this is the solution to the question

Step-by-Step Solution

To solve the problem of adding the fractions 14 \frac{1}{4} and 18 \frac{1}{8} , follow these steps:

  • Step 1: Identify the denominators: 4 and 8. We need a common denominator to add the fractions.
  • Step 2: Find the least common multiple (LCM) of 4 and 8. The smallest number that both 4 and 8 can divide is 8, so our common denominator will be 8.
  • Step 3: Convert 14 \frac{1}{4} to a fraction with denominator 8. To do this, multiply both the numerator and the denominator of 14 \frac{1}{4} by 2:
    • 14=1×24×2=28 \frac{1}{4} = \frac{1 \times 2}{4 \times 2} = \frac{2}{8}
  • Step 4: Now add the fractions: 28+18 \frac{2}{8} + \frac{1}{8} .
    • Since the fractions now have the same denominator, add the numerators: 2+1=3 2 + 1 = 3 , while keeping the denominator 8.
    • The result is 38 \frac{3}{8} .
  • Step 5: Ensure the fraction is in its simplest form. The fraction 38 \frac{3}{8} is already simplified, as 3 and 8 have no common factors other than 1.

Therefore, the sum of 14+18 \frac{1}{4} + \frac{1}{8} is 38 \frac{3}{8} .

Once we compare this with the given answer choices, we find that our final result, 38 \frac{3}{8} , matches choice 1.

Hence, the correct answer to the problem is 38 \frac{3}{8} .

Answer

38 \frac{3}{8}