Section 1
📘 Percents
New Concept
Percent means per hundred.
What’s next
Next, you'll estimate percents, find remaining parts of a whole, and compare percents to common fractions like .
In this Grade 4 lesson from Saxon Math Intermediate 4, students explore percents as parts of a whole, learning that percent means "per hundred" and can be expressed as a fraction with a denominator of 100 or as a decimal. Students practice naming percents using familiar money equivalents, estimating percents visually, finding the remaining percent of a whole, and calculating 50% of a number by dividing it in half. The activity reinforces connections between fractions, decimals, and percents through shading figures and comparing values.
Section 1
📘 Percents
Percent means per hundred.
Next, you'll estimate percents, find remaining parts of a whole, and compare percents to common fractions like .
Section 2
Percent
A percent is a fraction with a denominator of 100. The percent sign (%) represents the denominator 100. For example, .
A quarter is what percent of a dollar? .
A dime is what percent of a dollar? .
A penny is what percent of a dollar? .
Think of 'percent' as 'per cent,' just like there are 100 cents in a dollar. So, 25% is like 25 cents out of a dollar. The percent sign (%) is just a cool shorthand for writing a fraction with 100 on the bottom. It’s a super handy way to talk about parts of a whole, from test scores to sale prices.
Section 3
Finding the Remaining Percent of a Whole
The parts of a whole total 100%. If 25% of a circle is shaded, then 75% is not shaded because .
If 40% of a circle is shaded, what percent is not shaded? is not shaded.
If 80% of the answers were correct, what percent were incorrect? were not correct.
If the chance of rain is 10%, what is the chance it will not rain? chance of no rain.
Imagine a whole pizza is 100%. If you eat 30% of it, how much is left? Just subtract from 100! The whole of anything—a group of people, a tank of gas, or a bag of candy—always adds up to 100%. Knowing one part lets you instantly figure out the other missing part. It's a simple subtraction trick!
Section 4
Finding 50% of a Number
Since 50% equals , we find 50% of a number by dividing it into two equal parts.
How many eggs is 50% of a dozen (12 eggs)? eggs.
How many minutes is 50% of an hour (60 minutes)? minutes.
How much money is 50% of 10 dollars? .
Don't let 'finding 50% of a number' scare you! It's just a math-class way of saying 'cut it in half.' Since 50% is the same as the fraction , you just divide the total number by two. It’s the easiest percent calculation you'll ever do. If you can share a cookie, you can find 50%.
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Section 1
📘 Percents
Percent means per hundred.
Next, you'll estimate percents, find remaining parts of a whole, and compare percents to common fractions like .
Section 2
Percent
A percent is a fraction with a denominator of 100. The percent sign (%) represents the denominator 100. For example, .
A quarter is what percent of a dollar? .
A dime is what percent of a dollar? .
A penny is what percent of a dollar? .
Think of 'percent' as 'per cent,' just like there are 100 cents in a dollar. So, 25% is like 25 cents out of a dollar. The percent sign (%) is just a cool shorthand for writing a fraction with 100 on the bottom. It’s a super handy way to talk about parts of a whole, from test scores to sale prices.
Section 3
Finding the Remaining Percent of a Whole
The parts of a whole total 100%. If 25% of a circle is shaded, then 75% is not shaded because .
If 40% of a circle is shaded, what percent is not shaded? is not shaded.
If 80% of the answers were correct, what percent were incorrect? were not correct.
If the chance of rain is 10%, what is the chance it will not rain? chance of no rain.
Imagine a whole pizza is 100%. If you eat 30% of it, how much is left? Just subtract from 100! The whole of anything—a group of people, a tank of gas, or a bag of candy—always adds up to 100%. Knowing one part lets you instantly figure out the other missing part. It's a simple subtraction trick!
Section 4
Finding 50% of a Number
Since 50% equals , we find 50% of a number by dividing it into two equal parts.
How many eggs is 50% of a dozen (12 eggs)? eggs.
How many minutes is 50% of an hour (60 minutes)? minutes.
How much money is 50% of 10 dollars? .
Don't let 'finding 50% of a number' scare you! It's just a math-class way of saying 'cut it in half.' Since 50% is the same as the fraction , you just divide the total number by two. It’s the easiest percent calculation you'll ever do. If you can share a cookie, you can find 50%.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter