Ratios, proportions, percents worksheets
Free printable worksheets on Ratios, percentages, and proportions
Free worksheets for practice solving ratios
Ratio and Proportion Worksheets
Free printable worksheets for additional practice
Free worksheets for ratio word problems
Printable Worksheets for ratio word problems
Ratios and Proportion Worksheets
Free printable worksheets
Free worksheets for addition practice solving ratios and proportions
Worksheets on proportion word problems
Free worksheets for additional help with proportions
Worksheet on Ratio,Proportion, and Percent
Free worksheets on percentages, integers, expressions, fractions, and more
Ratios
Ratios are a mathematical expression to compare units.
There are 3 blue squares to 1 yellow square
When describing a ratio, the first number is known as the ‘antecedent’ and the second is the ‘consequent’. So, in the ratio 4:2, the antecedent is 4 and the consequent is 2.
Ratios can be written in three ways:
x to y
x:y
x / y
How to identify and solve ratios
Introduction lesson on Ratios by Khan Academy
Understanding ratios and solving ratio problems
Unit: Ratios, rates, proportions
Lessons in Ratios, rates, proportions
Proportions
A proportion is an equation that says that two ratios are equivalent.
When setting up a proportion formula make sure the units in each ratio are the same. If you put one unit in the numerator for one of the ratios then the second ratio should have that same unit in its numerator position.
1. First step is to setup the proportion formula
The percent is 25, the whole is 160, and we want to find the "part":
X = 25
160 100
2. Multiply across the known corners, then divide by the third number:
X = (160 × 25) / 100
= 4000 / 100
X = 40
Answer: 25% of 160 is 40.
Ratios and proportions and how to solve them
Steps on how to solve ratios and proportions
Lessons on proportions from Khan Academy
All about solving and setting up proportions
Overview of the Ratio and Proportion Formula
Need help with basic addition? Looking to expand your knowledge of fractions, decimals, and percents? Want to learn algebra? Use these interactive lessons to learn them all, then test your knowledge.
Percentages
Percent means “for every 100” or "out of 100."
Percentage is a fraction whose denominator is 100.
Percentages can be written as decimals by moving the decimal point two places to the left.
Decimals can be written as a percentages by moving the decimal point two places to the right
A percent proportion is an equation where a percent is equal to an equivalent ratio.
Example:
25 % of 200 is ____
In this problem, of = 200, is = ?, and % = 25
We get:
is/200 = 25/100
Since is in an unknown, you can replace it by X to make the problem more familiar.
X = 25
200 100
Cross multiply to get X × 100 = 200 × 25
y × 100 = 5000
Divide 5000 by 100 to get y
Since 5000/100 = 50, y = 50
So, 25 % of 200 is 50
