Corbett Maths
Multiplication by Powers of Ten
Multiplying by powers of 10 is a powerful skill. Scholars first review how to determine values of powers of 10. They then learn how to multiply whole numbers and decimals by powers of 10 to finish the instructional video.
Curated OER
How Do You Solve a Decimal Equation Using Multiplication?
Solve this algebraic equation in one step by using the multiplication property of equality. Not sure what that property is? Then watch this video and see the instructor work out this problem. These are decimal numbers so make sure to use...
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...
Curated OER
How Do You Turn a Percent Into a Fraction?
Change decimals to percent, fractions to decimals, percentages to fractions, etc. Remember how to do all of these conversions? It gets so confusing. Move the decimal to the right? Make it a fraction over 100? Multiply by? Oh my! So watch...
Curated OER
How Do You Solve a Decimal Inequality Using Subtraction?
Isolate the variable to solve any equation. This equation happens to be an inequality but is solved no different than if it were just an equation. Use the subtraction property of inequality to solve this given problem. The numbers are...
Corbett Maths
Multiplication by 10, 100 and 1000
Make multiplication seem 10 times simpler. Viewers of a short educational video see how to multiply values by 10, 100, and 1,000 by moving the decimal point. Examples in the video cover both whole numbers and decimals.
Khan Academy
Understanding Exponents 2
Explain an exponential number. Sal shows that 5 to the 3rd power is 5x5x5 while 5x3 is 5+5+5. He demonstrates that they have very different answers. Note: This is part 2 in a set of videos on exponents. It may serve students best if this...
Khan Academy
Exponent example 2
Many young mathematicians get slightly confused when they are introduced to the concept of exponents. This resource will ensure that they never get confused again. Sal explains, quite emphatically, that 6 to the 8th power is NOT the same...
Curated OER
Solving One-Step Equations 2
Help your students understand how to use their algebraic reasoning to solve a one-step equation, where they must solve for X. Add this video to a lesson or assign it as homework.
Curated OER
Taking Percentages
There are two percentage concepts covered in an informative video. The first is how to find a given percent of a given number; the second concept shows learners how to find a number when the percent is given. Sal finishes by...
Curated OER
Two-Step Equations
Sal adds a few more steps to these problems as he solves algebraic equations with two steps - though he states that "there's more than one way to do it." Those who become confused by increasingly complicated algebra problems on a test...
Curated OER
How Do You Solve a Word Problem That Compares Two Fractions?
Who made more money in the stock market, Brad or Ariel? Brad's stock went up, but Ariel's stock fluctuated up and down. Set up an inequality to solve this one. Ariel will have several terms as her stock fluctuated and Brad has a single...
Curated OER
How Do You Find a Rational Number Between Two Fractions?
So do you really want to know how to find a rational number between two given fractions? The teacher explains how to average the two fractions to find a rational number between the two fractions. There are several steps involved in...
Krista King Math
How to Write Small and Big Numbers in Scientific Notation
Now you don't have to write all those zeros. Viewers of this video learn how to write large and small numbers in scientific notation. The video covers two examples for each type.
Curated OER
How Do You Find a Missing Angle in a Triangle?
The interior angles of any and ALL triangles adds up to 180 degrees. So if given two of the angle degrees, is it possible to find the value of the third angle? Yes! Use the triangle sum theorem to solve for the missing angle. Watch this...
Homeschool Math
Homeschool Math: Multiplying Decimals by Decimals
A complete lesson about multiplying decimals by decimals. Video explains the rule for multiplying decimals with examples and practice exercises. [6:16]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Multiplication 8: Multiplying Decimals
This video shows how to multiply two decimals. Practice problems are available. [3:47]
Math Mammoth
Math Mammoth: Multiplying Decimals by Decimals: The Shortcut
Demonstrates a shortcut strategy for multiplying decimals by decimals. [6:45]
Khan Academy
Khan Academy: Intro to Multiplying Decimals
Demonstrates how to multiply decimal numbers using the example of 9 x 0.6. [3:50]
Math Playground
Math Playground: How Do You Multiply Decimals?
This video illustrates how to multiply numbers with digits to the right of the decimal point.
Math Mammoth
Math Mammoth: Multiplying Decimals by Decimals: Decimals by Whole Numbers
Demonstrates how to multiply a decimal number by a whole number and how to do decimal multiplication by 'scaling' a stick model. [3:43]
Math Mammoth
Math Mammoth: Multiplying Decimals And/or Fractions, Including Negative Ones
Demonstrates how to multiply negative and positive decimals by decimals and decimals by fractions. [6:58]
CK-12 Foundation
Ck 12: Elem Math: Overview of Decimal Multiplication
[Free Registration/Login may be required to access all resource tools.] Video demonstrating how to multiply two decimal numbers together. Shows examples using numbers with 1 to 4 digits after the decimal point. [1:44]
Khan Academy
Khan Academy: Multiplying Challenging Decimals
Demonstrates how to multiply decimals to the thousandths place using the example of 1.21 x 0.043. [4:25]