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We are going to have some fun today with decimals and how to add them. Stay with me, this is going to be fun!

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SMP 1
SMP 2
SMP 4

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Let's first practice converting decimals and fractions.

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Let's first practice converting decimals and fractions.

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Please complete the activity below individually. We will go over the answers as a class after everyone has had enough time to complete the activity.

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Line 'em Up (decimal song) | Mister C (Song #12)

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Second, Let's split up into groups of three or four.

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Second, Let's split up into groups of three or four.

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-Each group will need one copy of the activity sheet, one pumpkin card and five fall stickers.
- Each student will need a sheet of scratch paper for working out the problems.

Remember- At the end of class all students must turn in their own scratch paper showing their work throughout the activity.

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-I want each group to randomly place their fall stickers on five different decimals in the activity.
-Second, you will need to add together the largest three decimals selected, lets find out who has the largest decimal!
-Now as a group, I want you to add all five of your decimals selected together and right them down on your pumpkin card.
-As a class, let's arrange each pumpkin card from each group from smallest to largest.
- The group with the largest decimal will pick from the pumpkin patch first and then we will go in descending group order.

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After your activity worksheet and individual scratch papers are turned in, each group will decorate their pumpkin and include the decimal they ended with.

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"We use decimals every day while dealing with money, weight, length etc. Decimal numbers are used in situations where more precision is required than the whole numbers can provide.(Application of Decimal)"

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The Decimal number system is also called HINDU-ARABIC, or ARABIC, or base 10 system. Mathematics commonly uses a positional numeral system employing 10 as the base and requiring 10 different numerals, the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and a dot (decimal point).

An example of how the Chinese used the decimal system may be seen in an inscription from the thirteenth century BC, in which '547 days' is written 'Five hundred plus four decades plus seven of days'.

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You may ask what about in the real world? Do we use decimals often?

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You may ask what about in the real world? Do we use decimals often?

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Short answer is yes, decimals are used in all of our daily lives. Most of the time we don't even notice that we are using decimals.

For example: when your parents give you an allowance and tell you you can spend half of it on a new toy but the other half has to be saved. If your parents give you $21 dollars a month, how much can you spend on a toy? Take half of the $21 and that would be $10.50. So when your looking for a toy you have to pay attention to what the toys your looking at cost. Don't forget to account for the tax at the end (unless you live in Alaska). Pretty cool right. Money is one of the many ways we interact with decimals on a daily basis.

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Great job on these activities! Now that we are at the end of the lesson, you are all pros at adding and subtracting decimals!

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"Applications Of Decimal In Daily Life" Byju's.

https://byjus.com/maths/decimals-in-daily-life/

"Fraction and Decimals" Great Schools
https://www.greatschools.org/library/cms/21/24721.pdf

"History of Chinese Invention- The Decimal System of Number Representations" Computersmiths. http://www.computersmiths.com/chineseinvention/decimal.htm

Jumpstart Games, Inc. "What A Deal" Mathblaster. 2018 http://www.mathblaster.com/parents/math-activities/view-all-math-activities/what-a-deal-view

Mister C "Line'em Up (Decimal Song)" Youtube
https://www.youtube.com/watch?reload=9&v=26nJw1Ko4-A