Instructional Video4:53
Curated OER

How Do You Multiply Decimals?

For Teachers 4th - 6th
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...
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...
Instructional Video2:23
Curated OER

How Do You Multiply Decimals?

For Teachers 6th - 12th
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...
Lesson Plan
EngageNY

The Distributive Property and the Products of Decimals

For Students 6th Standards
Make multiplication of decimals easier by applying the distributive property. Pupils investigate how they can use the distributive property to multiply decimals. After learning the strategy, they work on some practice problems at...
Lesson Plan
Curated OER

Fractions Forever!

For Teachers 5th - 8th
Middle schoolers identify proper, improper fractions, and mixed numbers.  They reduce fractions to their lowest terms. They add and subtract fractions with different denominators, and multiply and divide fractions, as well as...
Lesson Plan
Illustrative Mathematics

Movie tickets

For Teachers 6th - 7th Standards
This is a good Common Core question that relates inflation to operations with decimals and rounding. Young learners are asked to find out if an amount of money can purchase the same amount of movie tickets in 2012 as it did in 1987. They...
Instructional Video4:07
Curated OER

How Do You Divide Decimals?

For Teachers 4th - 6th
Converting decimals to whole numbers is explained. An instructor shows how to multiply a decimal to convert it to a whole number. She then goes on to explain how to find the answer to a division problem involving decimals.
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...
Lesson Plan
EngageNY

Fraction Multiplication and the Products of Decimals

For Students 6th Standards
Class members come up with a hypothesis on the number of decimal digits in the product of two decimals. Learners work in groups to complete several decimal multiplication problems. The results help groups develop a conjecture on the...
Instructional Video4:03
Khan Academy

Multiplying Fractions and Whole Numbers: Mixed Number Answer, Pre-Algebra

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

Multiplying and Dividing with Significant Figures, Decimals, Pre-Algebra

For Students 7th - 9th
Sal takes out the big guns—or, in this case, the big calculator—in this video, which takes the concept of significant figures even further. Sal shows how to multiply and divide significant figures using electronic and handwritten...
Lesson Plan
EngageNY

The Division Algorithm—Converting Decimal Division into Whole Number Division Using Fractions

For Students 6th Standards
Knowing the standard algorithm opens up a whole new world of division. Scholars learn how to convert division involving decimals to division involving whole numbers to use the standard algorithm. Knowing how to multiply with powers of...
Lesson Plan
Mathematics Assessment Project

Translating Between Repeating Decimals and Fractions

For Teachers 8th Standards
Model for your young mathematicians the process for converting repeating decimals to fractions. To demonstrate their understanding of the process, class members then complete and assessment task and participate in an activity matching...
Instructional Video1:51
Khan Academy

Dividing a Decimal by a Power of 10: Shortcut, Decimals, Pre-Algebra

For Students 5th - 7th
Occasionally, in mathematics, there are "shortcuts" one can take. Sal explains a quick way to divide decimal numbers. He demonstrates that in some instances, simply shifting the decimal point to the left will result in a correct answer.
Instructional Video2:42
Khan Academy

Decimal to Simplified Fraction, Decimals, Pre-Algebra

For Students 4th - 6th
This video demonstrates how to write a decimal as a fraction and explains why it works. The concept is explained well and presented clearly and straightforwardly. Great for third or fourth graders.
Lesson Plan
Curated OER

Multiplying Decimals and Mixed Numbers

For Teachers 7th - 12th
Students practice multiplying decimals and/or mixed numbers, explore the effects of multiplying decimals and mixed numbers, and practice predicting the effects of multiplying a number by a decimal or mixed number.
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.
Lesson Plan
Curated OER

Operations with Positive Fractions and Decimals

For Teachers 5th - 8th
Explore the concept of fractions and decimals! In this fractions and decimals instructional activity, pupils use fraction tiles to express fractions. They play a fraction review basketball game where when a team gets a question correct...
Lesson Plan
EngageNY

Converting Repeating Decimals to Fractions

For Students 8th Standards
Develop a process with your classes for converting repeating decimals to fractions. Through this process, pupils understand that any repeating decimal can be written as a fraction. The 10th lesson in this 25-part module helps...
Lesson Plan
EngageNY

Grade 5 Math Module 1, Topic E, Lesson 11

For Teachers 5th Standards
Let your understanding of multiplying decimals flourish and multiply. After briefly reviewing place value concepts and how to add and subtract decimals, scholars learn to multiply a decimal fraction (like 0.6) by a whole number. They use...
Lesson Plan
Curated OER

Multiplying Whole Numbers and Decimals

For Teachers 4th - 7th
Upper elementary and middle school learners explore number sense by completing a list of multiplication problems in class. Learners discuss the difference between whole numbers and decimals while solving multiplication problems. They...
Lesson Plan
Curated OER

Division of Decimals

For Teachers 4th - 6th
Work with the class to investigate the concept of dividing decimals. They will use a variety of problem-solving skills in order to practice the operation of division. The teacher can use the dialogue to guide learners through the various...
Lesson Plan
EngageNY

The Division Algorithm—Converting Decimal Division into Whole Number Division Using Mental Math

For Students 6th Standards
Make math much simpler with mental math methods. The 16th installment in a series of 21 looks at ways scholars can apply mental math to convert division problems into easier problems with the same quotient. Multiplying or dividing both...
Lesson Plan
Curated OER

Representing Fractions, Decimals, and Percents

For Teachers 5th - 7th
In this fractions, decimals, and percents lessons, students explore various methods of representing fractions. They demonstrate situations that represent rational numbers. Students create a foldable exploring fractions, decimals and...

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