Search for tag: "decimal"

Set builder and interval notation

Shows how to interpret and graph on a number line a set written in set builder notation, then goes on to transfer the line graph to interval notation.

From  Tom Grant 9 plays 0  

Identifying numbers as rational or irrational

A brief description of the difference between rational and irrational numbers followed by examples of number in both categories.

From  Tom Grant 21 plays 0  

Identifying numbers as integers or non-integers

A brief description of what integers consist of followed by a list of numbers where it is decided whether each is an integer or not.

From  Tom Grant 5 plays 0  

Evaluating an exponential function that models a real-world situation

This shows how to enter a value into a function to get a result for something like depreciation of value over time for a purchased item.

From  Tom Grant 8 plays 0  

Rationalizing a denominator: Square root of a fraction

This discusses what rationals and irratioinals are, then goes on to demonstrate how to eliminate any radical number in the denominator.

From  Tom Grant 8 plays 0  

Introduction to simplifying a product involving square roots using the distributive property

A quick look at distributin a radical across a sum of a whole number and a different radical

From  Tom Grant 17 plays 0  

Introduction to square root addition or subtraction

Two examples showing the addition or subtraction of like radicals

From  Tom Grant 13 plays 0  

Word problem involving the Pythagorean Theorem

Application of the equation relating the three sides of a right triangle:: a^2 + b^2 = c^2 where a and b are the shorter sides that make the rigiht angle and c is the lenght of the longest side.

From  Tom Grant 18 plays 0  

Finding the percentage increase or decrease: Advanced

This video shows how to compute the percentage of a price increase. A price decrease is worked the same way and the percentage is taken of the first and higher price.

From  Tom Grant 11 plays 0  

Finding the original price given the sale price and percent discount

Explains the pitfalls that you need to know about to correctly do this problem. It is not as easy as it seems at first glance, so pay close attention to this video.

From  Tom Grant 21 plays 0  

Finding a percentage of a total amount without a calculator: Sales tax, commission, discount

Just finding the amount of increase or decrease in these types of percent problems.

From  Tom Grant 8 plays 0  

Finding the final amount given the original amount and a percentage increase or decrease.

Finding the amount from taking a percentage off or adding a percentage on, then finding the new amount.

From  Tom Grant 10 plays 0  

Applying the percent equation: Problem type 1

Using the proportion %/100 = Amount/Base to plug in what's given to find what is asked for.

From  Tom Grant 14 plays 0  

Finding a percentage of a whole number

Multiplying the decimal version of a percent by a number to find that percentage amount.

From  Tom Grant 10 plays 0  

Solving a two-step equation with signed fractions

Shows how to get rid of fractions early by multiplying through an equation by the LCD of all of the fractions.

From  Tom Grant 17 plays 0  

Evaluating a linear expression: Signed fraction multiplication with addition or subtraction

Evaluating a variable expression when you know specific number values for each varible.

From  Tom Grant 26 plays 0