### Home > MC1 > Chapter 9 > Lesson 9.1.4 > Problem9-43

9-43.

Find each of the following percents without using a calculator. Show your work or explain your thinking for each problem.

1. $22\%$ of $400$

Think of this as $2\left(10\% \text{ of } 400\right) + 2\left(1\% \text{ of } 400\right)$.

$10\%$ of $400$ is $40$.
$1\%$ of $400$ is $4$.

2. $19\%$ of $35$

Think of this as $2\left(10\% \text{ of } 35\right) − \left(1\% \text{ of } 35\right)$.

$10\%$ of $35$ is $3.5$.
$1\%$ of $35$ is $0.35$.

3. $94\%$ of $130$

Think of this as $9\left(10\% \text{ of } 130\right) + 4\left(1\% \text{ of } 130\right)$.

What is $10\%$ of $130$?
What is 1% of $130$?