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1) We convert decimals to fractions so we can have another way of seeing how to do it.
2) First, We take the decimal and see the place value and take how ever many zeros you have is what will be the denominator and what the number is will be the numerator.

WORD PROBLEM: I spent 15 1/2 hours working on my project. Write the number of hours as a decimal

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Converting decimals to fractions example 1 | Decimals | Pre-Algebra | Khan Academy

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1)We add and subtract decimals so we can see the answer between the two decimals that you are adding or subtracting.
2) First, You take the two decimals you are using and line them up. Second, You take the decimals and add or subtract them.

WORD PROBLEM: Number one
There where 47.2 pounds of blocks in boxes. Then they got another box with 23.9 pounds of blocks. How many blocks are there in total?
****Permission from Potocki

Adding/Subtracting Decimals Test

47.2+23.9=
2.94+5.82=
39.5-28.2=
4.62+1.58=
69.2-42.9=
8.25+3.05=
51.9-21.0=
5.01+7.25=
49.1-38.2=
Answer Key                           1)2.97
2)71.1
3)8.76
4)11.3
5)162.62
6)26.3
7)11.3
8)30.9
9)12.26
10)10.9

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1)  The number does not always get bigger, sometimes you JWALB it. You see how many times they are dividing or multiplying and do that to the product, for example)            .5 x 25.    the answer will be 12.5.
2)First, You get the two decimals and line them up. Second, You take the decimals and start multiplying as you would as always.

WORD PROBLEM: Meredith and I shared a pack of crackers, we each ate 1/2. If I ate 1/2 of my portion, how much did I eat?

**Permission from Potocki
Multiplying Decimals Test

1)1.25 x .71

2)7.08 x . 3

3)56.2 x 5.79

4)12.04 x 2.60

5) 8.2 x 3.4

6) 5.07 x 2.04

7) 6.3 x 2.5

8) 41.1 x 22.4

9) 8.4 x 5.6

10) 20.1 x 9.3

ANSWER KEY

1) .8875

2) 2.124

3) 44.398

4)9.6320 or  9.632

5) 27.88

6) 1.2168

7) 15.75

8) 920.64

9) 47.04

10) 186.93

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1) We Compare and Order Decimals so we can see how the decimals are greater or smaller and how  the numbers are similar. It is where the decimal point is placed so we know that it is greater.
2)First, You take the decimals and see how we can arrange them to be in order like for example if I had
34.567            1st   32.397
32.397            2nd   34.567
39.902             3rd    36.340
36.340              4th    39.902
39.938               5th    39.938
From least to greatest      Second, You can start to arrange the decimals and then you have compared and order decimals.

WORD PROBLEM: At a sleepover for my birthday, Meredith ate 2.362 slices of a pizza, Savannah ate 3.265 slices of a pizza, Katelyn ate 3.652 slices of a pizza and I ate 2.562 slices of pizza. List In order from who ate the least to who ate the most pizza.

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https://www.wikihow.com/images/thumb/7/77/Round-Decimals-Step-5-Version-2.jpg/aid1721879-v4-900px-Round-Decimals-Step-5-Version-2.jpg  https://youtu.be/DR2DYe7PI74  http://mcdn1.teacherspayteachers.com/thumbitem/Compare-Order-Decimals-Poster/original-388745-1.jpg https://docs.google.com/document/d/1kvAlLIYMrPrIM4MxdJvAhrY0V2xBEIbKLW0yuTQQfWo/edit
http://bodero.weebly.com/uploads/1/3/2/6/13266523/3919975_orig.png
https://www.quia.com/files/quia/users/admin37082/Decimals/dividing_decimals.png

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1) We divide decimals so we can see how many times one of them can go into the other decimal.
2) First, You take the decimal that is the one you are putting in the other decimal and divide that so you can make it a whole number and to do that you have to take the other decimal to maintain equality. If you divide by 100 on one side do It on the other side also.

WORD PROBLEM: For Christmas, my sister received $235.00, she said she would split It with me to go shopping, how much money will we each get?

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1) We round decimals so we can get a closer estimate to the answer and keep the value close to what it is.
2) First, we see if the place value number is four or higher, if it is then we leave it be. If it is  five  or higher then we add one more and the numbers behind the place value will be changed to all zeros and the ones in front will stay the same , for example) 65.8 to 66, 49.06 to 50

WORD PROBLEM: There were 83.9 pounds of candy donated to our class, if we divide that by 27 students in our class, about how many pounds of candy would each student receive?