Fill in the missing number \( 30 \% \) of \( \|=21 \) Submit

To find the missing number, you can set up the equation: \( 0.30 \times x = 21 \). To solve for \( x \), divide both sides by \( 0.30 \): \[ x = \frac{21}{0.30} = 70. \] So, the missing number is \( 70 \). Thinking about percentages can be tricky, especially if you forget that \( 30\% \) is the same as \( 0.30 \) in decimal form! It might help to remember that moving the decimal point two places to the left can convert a percentage to a decimal. Keeping this in mind will make your calculations smoother next time. For those who want to dive deeper into percentages, there are plenty of engaging resources available online! Websites dedicated to math tutorials often have practice problems and videos that make learning about percentages more interactive and enjoyable. Plus, checking out math apps that gamify learning can help reinforce concepts while having a blast!