Equivalent fractions Fill in the blank to make the two fractions equivalent. \( \frac{4}{5}=\frac{\square}{20} \)
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To make the two fractions equivalent, we can cross-multiply to find the missing number. Since \(4 \times 20 = 80\) and \(5\) also multiplies by the same factor to balance the equation, we find that \(5 \times 4 = 20\). So, \(\frac{4}{5}=\frac{16}{20}\). Thus, the missing number is 16! You see, fractions are like little math ninjas - they can sneakily appear in different forms while still holding the same value! Understanding this concept can make comparing and adding fractions a much easier task. So, embrace those fractions and let them shine!