Dividing Decimals by Decimals

On this page, review the notes, go through the slides, watch the videos and do some of the practice sites. Take notes in you math journal which is shared with you in Google Classroom. Make sure to type the vocabulary in the vocabulary column. When you are done, click the "Take the Quiz" picture at the bottom of the page. BE SURE you are ready. You only get one chance at the Quiz.

Today's Goal: In this lesson, students will be able to divide using a decimal divisor (the number outside in a division problem).

Dividing A Decimal by a Decimal

Remember: To divide you must have a whole number as a divisor. If there is a decimal in the divisor you must move it to the right. Count the places you move it and move i t the same number of places in the dividend (the number inside) even if you have to add some zeros to make it happen.

Steps for Dividing Decimals

Write down the problem.
Move the decimal in the divisor (number outside) to the right to make a whole number
Move the decimal in the dividend (the number inside) the same number of space to the right. ou may need to annex zeros if there are not enough digits.
Follow the normal division steps until there is nothing to bring down. That is where the problem ends.

Divide
Multiply
Subtract
Check
Bring Down

Does McDonalds Sell Cheese Burgers?

Example:

Remember: When a problem doesn't end evenly you may annex a zero or zeros and keep going. For this class do not add any more than three zeros. If you need to add more than that stop and go back to check your work or reread the directions. You may be requested to round your answer to a given place value.

Example:

My Slides

Lesson 3-8

Practice Sites

Khan Academy - Practice dividing decimals with decimal divisors.

Mathopolis - Multiple choice practice.

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