Curated OER
How Do You Do Long Division with Decimals?
Review some long division that contains a decimal number. Do the division first and when that is completed then figure out where the decimal goes in the answer. Just don't let those decimals make you crazy about doing the long division.
Curated OER
How Do You Divide a Decimal by a Decimal?
Many learners would look at this decimal division problem and just skip it. Don't let them do that! Figure out how to help your learners master long division. The teacher helps make decimals and long division seem doable.
Curated OER
How Do You Subtract Decimals?
Subtracting? Line up the decimals, line up the decimals, line up the decimals! Put in place-holder trailing zeros, when necessary. Now do your subtraction. When you have your answer, bring down the decimal, bring down the decimal, bring...
Curated OER
What are Trailing Zeros?
Can you put a million zeros on the right side of a decimal number? Well, there are a couple of rules you have to follow to do that. One - it has to be on the right side of the decimal. Two- there can't be any numbers after all those...
Curated OER
Estimating Surface Area
Kids might enjoy this dramatic presentation on estimating surface area. The fake Transylvanian accent is a bit distracting but the problem solving practices are sound. Dr. Crazy Pants rounds his decimal measurements then multiplies...
Curated OER
Adding Decimals (2)
Adding decimals can be as easy as following the steps. This short presentation shows what to do and what not to do when adding decimal numbers together. Note: There is no audio commentary with this presentation.
Curated OER
Long Division of Numbers - Arithmetic Basics
Watch and learn how to do long division. You'll see and hear the process in an easy to follow step-by-step way. There is no doubt that this is a helpful tutorial great for those in need of a long division refresher. Multiple colors and...
Curated OER
How Do You Use the Formula for Simple Interest?
I=prt is the formula for simple interest. What does each variable represent? I =interest, p =amount originally invested, r =rate of interest (usually in percent), t =time. Now all you have to do is plug in the numbers and do the...
Curated OER
How Do You Figure Out if a Square Root is Bigger than Another Number?
You have been given a square root and need to compare that to a decimal number to find out which one is bigger. How can you make that comparison? One way to do this is to find the square root of the square root number and then compare it...
Virtual Nerd
How Do You Figure Out the Volume of a Solution Using Percents?
A word problem, chemistry, and percent? I know you want to throw your hands in the air and run away from this problem, but please don't. Pay close attention as the instructor helps you unpack this word problem to set up an equation that...
Curated OER
What's a Percent?
Percent is the number of something per 100. It can be written with a percent sign (%), or as a decimal, or as a fraction- a number over 100.
Curated OER
What is the Percent Equation?
What number is 40% of 30? Learn the formula and be able to figure out all of the percent problems. The instructor demonstrates the basic formula. Then she shows how and where to plug in the numbers according to what the problem is asking...
Curated OER
What is the Formula for Simple Interest?
I=prt is the formula for interest. What does each variable represent? I =interest, p =amount originally invested, r =rate of interest (usually in percent), t =time. Now all you have to do is plug in the numbers and do the calculations.
Curated OER
How Do You Find the Range of a Data Set?
Looking for the range of a set of numbers? Well, that means you are looking for the difference between the largest value and the smallest value. So first, write the numbers in order from least to greatest. Then identify the largest value...
Curated OER
How Do You Subtract Decimals?
Subtracting? Line up the decimals, line up the decimals, line up the decimals! Put in place holder trailing zeros, when necessary. Now do your subtraction. When you have your answer, bring down the decimal, bring down the decimal, bring...
Curated OER
How Do You Multiply Decimals?
Find the product of numbers that have decimals. First, ignore the decimals and multiply the integers. Second, count the place values of the decimals for each value given. Third, add the values together. Fourth, place the decimal in the...
Curated OER
How Do You Figure Out a Percent of Change?
First identify the parts of the word problem. Next identify the variable, decide what formula to use, figure out the quantities, insert the quantities into the equation, and now solve. There are many parts to solving this word problem so...
Virtual Nerd
How Do You Use an Equation to Find a Part of a Whole?
Watch the instructor change a percent into a decimal and multiply it by the original number to determine the percent. One idea would be to embed this video in a PowerPoint presentation, or assign it as homework with your flipped...
Curated OER
How Do You Convert From Decimal Notation to Scientific Notation?
The instructor demonstrates how to convert a number written in decimal form to scientific notation. An example is given for a number with a positive exponent and an example is given for a number with a negative exponent.
Curated OER
How Do You Use an Equation to Find a Whole?
The teacher shows how to break down this problem by first identifying all the terms. After changing the percent to a decimal, she shows how to set up the equation using the terms. Lastly, she solves the equation using the division...
Curated OER
How Do You Convert From Scientific Notation to Decimal Notation?
The instructor demonstrates how to convert a number written in scientific notation to a decimal number. An example is given for a number with a positive exponent, and an example is given for a number with a negative exponent.
Curated OER
How Do You Multiply Decimals?
Using examples like 4.2 multiplied by 5.9, an instructor shows how to find the answer to these types of problems. She starts by explaining that the key to these problems involves ignoring the decimal points until you've multiplied the...
Curated OER
Change Fractions Into Decimals
This is a terrific way to help learners understand how decimals can be described as fractions. Using 2.675 as the first example, the instructor leads viewers through the process of describing this number as a fraction. She then addresses...
Mathispower4u
Determine Rational or Irrational Numbers (Square Roots and Decimals Only)
Rational or irrational ... it can only be one or the other. Viewers of a YouTube video learn how to distinguish between rational and irrational numbers. In particular, the video focuses on numbers written as square roots and as decimals.