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Instructional Video0:50
Curated OER

Multiplying Decimals

For Teachers 5th - 8th
See how easy it is to multiply decimals. This clip shows learners that when you multiply decimal numbers, you multiply the same as you would a whole number, then plug in the decimal point at the end.
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Instructional Video5:19
Corbett Maths

Multiplying Decimals

For Students 6th - 12th Standards
Make a point to carefully place the decimal point. By watching an educational video, pupils learn how to multiply decimals. They see that they need to multiply as if there are no decimal points, then hear how to correctly place the...
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Instructional Video1:51
Curated OER

Dividing Decimals 2.1

For Students 5th - 7th
Occasionally, in mathematics, there are "short cuts" one can take. Sal explains a quick way to divide decimals numbers. He demonstrates that in certain cases, simply shifting the decimal point to the left will result in a correct answer.
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Instructional Video4:34
Curated OER

How Do You Multiply Decimals?

For Teachers 5th - 7th
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...
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Instructional Video4:04
Curated OER

Multiplying Fractions and Mixed Numbers

For Students 5th - 7th
Here is a great video explaining how to multiply a fraction by a whole number. Sal shows students how to put a whole number over 1 in order to multiply it by a fraction. He simplifies his answer and writes it as a mixed number.
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Instructional Video9:31
Khan Academy

Multiplying And Dividing with Significant Figures

For Students 7th - 9th
Sal takes out the big guns - or in this case, big calculator - in this video, which carries the concept of significant figures even further. Sal shows how to multiply and divide significant figures using both electronic and handwritten...
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Instructional Video3:52
Corbett Maths

Percentages: Multipliers for Increasing and Decreasing by a Percentage

For Students 6th - 8th Standards
Solve two-step percent problems with a single multiplication. By reviewing how to find the percent of a problem, the video introduces the idea of finding multipliers to find solutions for increasing or decreasing percent problems. Pupil...
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Instructional Video2:18
1
1
Curated OER

How Do You Do Long Division with Decimals?

For Teachers 4th - 8th
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.
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Instructional Video5:09
Curated OER

How Do You Multiply Mixed Numbers?

For Teachers 4th - 8th
Multiply two mixed fractions. First, change them to improper fractions. Now, multiply the numerator times the numerator and the denominator times the denominator. Oh, that's a big number. Reduce it. Now, change it back into a mixed...
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Instructional Video1:16
Corbett Maths

Decimals to Percentages

For Students 5th - 8th Standards
Complete a quick conversion. Pupils view the short video to learn the process to convert a decimal to a percent. The scholars then practice the skill with two worksheets, giving them a chance to better understand the concept.
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Instructional Video4:35
Krista King Math

Decimal Arithmetic

For Students 3rd - 7th Standards
Teach the four operations with decimal numbers while focusing on the algorithms. The video instructor demonstrates one example each of adding, subtracting, multiplying, and dividing with decimal numbers. She explains the steps of each...
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Instructional Video6:13
1
1
Curated OER

How Do You Divide a Decimal by a Decimal?

For Teachers 4th - 7th
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.
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Instructional Video3:41
Curated OER

How Do You Turn a Decimal Into a Percent?

For Teachers 6th - 8th
Multiply a decimal number by 100 to get a percent number. Or take a shortcut and merely move the decimal point two places to the right. But don't forget to write the percent sign after you move the decimal. Otherwise it's just a number...
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Instructional Video1:57
Virtual Nerd

How Do You Use an Equation to Find a Part of a Whole?

For Teachers 6th - 8th Standards
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...
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Instructional Video3:10
Curated OER

Estimating Surface Area

For Teachers 5th - 8th
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...
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Instructional Video7:32
1
1
Math Antics

Finding a Percent of a Number

For Students 6th - 8th Standards
Use the knowledge of multiplying fractions to find a percent of a number. The video builds the process to find the percent of a number by recalling that the word of in fraction problems meant to multiply. Finding the percent of a number...
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Instructional Video5:39
Curated OER

How Do You Turn a Percent Into a Fraction?

For Teachers 6th - 8th
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...
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Instructional Video3:03
Curated OER

How Do You Solve a Decimal Inequality Using Subtraction?

For Teachers 6th - 8th
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...
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Instructional Video2:15
Corbett Maths

Multiplication by Powers of Ten

For Students 5th - 8th Standards
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.
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Instructional Video2:08
Khan Academy

Dividing whole numbers and fractions: t-shirts

For Students 5th - 7th Standards
There is no better way to present a math problem than within the context of a story. Sal explains how he divides a fraction to solve a word problem where he must determine how many shirts can be made with 48 yards of fabric. Problems...
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Instructional Video1:15
Khan Academy

Understanding Exponents 2

For Students 5th - 7th Standards
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...
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Instructional Video1:55
Khan Academy

Exponent example 2

For Students 5th - 7th Standards
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...
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Instructional Video13:50
Curated OER

Two-Step Equations

For Students 7th - 11th
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...
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Instructional Video4:34
Curated OER

How Do You Solve a Word Problem That Compares Two Fractions?

For Teachers 6th - 8th
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...

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