Compare Fractions: Determine the Sign Between 3/8 and 1/4

Question

Fill in the missing sign:

3814 \frac{3}{8}☐\frac{1}{4}

Video Solution

Solution Steps

00:05 Let's learn how to find the right sign.
00:08 First, let's find a common denominator to make things easier.
00:13 So, we'll multiply the whole fraction by 2 to match it up.
00:18 Make sure you multiply both the top number, called the numerator, and the bottom number, the denominator.
00:25 Awesome! Now, both fractions share the same denominator.
00:30 Here's a tip: When the bottoms are equal, the fraction with the bigger top number is larger.
00:38 Great job! And that's how we solve this math problem.

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the denominators of the fractions 38\frac{3}{8} and 14\frac{1}{4}.
  • Step 2: Determine the least common denominator of 8 and 4.
  • Step 3: Convert each fraction to have this common denominator.
  • Step 4: Compare the fractions by examining their numerators.

Let's begin by determining the least common denominator (LCD) of the fractions:

The denominators are 8 and 4. The least common multiple (LCM) of these two numbers is 8.

Convert each fraction to an equivalent fraction with the common denominator of 8:

  • 38\frac{3}{8} already has the denominator 8, so it remains 38\frac{3}{8}.
  • For 14\frac{1}{4}, convert by multiplying the numerator and denominator by 2:
  • 14=1×24×2=28\frac{1}{4} = \frac{1 \times 2}{4 \times 2} = \frac{2}{8}.

Now, compare these equivalent fractions: 38\frac{3}{8} and 28\frac{2}{8}.

Since 3>23 > 2, it follows that 38>28\frac{3}{8} > \frac{2}{8}.

Therefore, the correct sign for the missing space is >>.

Thus, 38>14\frac{3}{8} > \frac{1}{4}.

Answer

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