Adding and Subtracting fractions with unlike denominators

Tutorials:

Math.com Adding and Subtracting Fractions with unlike denominators
Adding and Subtracting Fractions with Unlike Denominators by Coolmath
Adding and Subtracting Fractions with Mixed Numbers
Visual Fractions Tutorial

Practice:

AAA Math Practice
Math-play Game
Adding and Subtracting Fractions on Quia

If you have any questions, please let me know.

Mrs. S. Hallum

Simplifying Fractions

If you need help with simplifying fractions, use the below link for additional steps:

How to simplify fractions
Cool Math Simplifying Fractions Tutorial


Practice Sites:

Simplifying Fractions Practice
Equivalent Fractions and Simplifying Fractions Game
Simplifying Fractions Practice Site 2
Simplifying Fractions Game
Simplifying Fractions Soccer Game

If you have any questions, please let me know.

Have a great week!

Mrs. S. Hallum

Equivalent Fractions

This week we are working on equivalent fractions. I will include a web address that you can go to for extra information on how to find equivalent fractions.

Go to the following web address for more information: http://www.coolmath4kids.com/fractions/fractions-04-equivalent-01.html

You can go to the following websites to practice equivalent fractions:

http://www.homeschoolmath.net/online/fractions.php
http://www.quia.com/jg/351.html
http://www.funbrain.com/fract/

Happy Veteran's Day!

I hope all of you are enjoying your Veteran's Day break. I just wanted to remind all of you about your practice sheet on decimal division. Don't forget to show your work. Also, we will have an assessment over using decimals and fractions interchangeably on Tuesday, November 16. If you would like extra practice, then copy and paste the following links into a new address bar:
http://www.homeschoolmath.net/worksheets/fraction-decimal.php
http://www.mrnussbaum.com/deathdecimals.htm
http://www.mathplayground.com/fractions_convert.html
http://www.toonuniversity.com/flash.asp?err=198
http://www.bbc.co.uk/skillswise/numbers/fractiondecimalpercentage/comparing/fractionsdecimals/game.shtml

Have a great holiday!

Mrs. Hallum

Decimal Division

Use the below link to help with decimal division:

http://www.math.com/school/subject1/lessons/S1U1L6GL.html

Modeling Decimal Division

We are working on dividing decimals and specifically, modeling decimal division. Your child has a study guide that he or she can use to help them with this skill. Below are some practice problems:

.54 divided by .09
.36 divided by .04
6.3 divided by 7
.09 divided by 3
.12 divided by 4

Decimal Multiplication Powerpoint

Decimal multiplication

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Decimal Multiplication

We are working on decimal multiplication and will be assessing out of it on Tuesday, October 19. Your child will be modeling decimal multiplication and answering problems that go all the way up to 3 numbers on the bottom. Along with multiplying correctly, your child will also learn where to place a decimal. In the next couple of days I will post a powerpoint and a video on decimal multiplication; but until then, your child has a study guide to use.

Modeling Decimals

We are working on modeling multiplication of decimals and whole numbers. They have examples from the classroom to help them with this, but you can use the image above to know what the different place values look like using base ten blocks.

Multiplying Decimals Patterns Practice

1 x 1,000 =
1 x 100 =
1 x 10 =
1 x 1 =
1 x .1 =
1 x .01 =
1 x .001 =

.5 x 1,000 =
.5 x 100 =
.5 x 10 =
.5 x 1 =
.5 x .1 =
.5 x .01 =
.5 x .001 =

45 x 1,000 =
45 x 100 =
45 x 10 =
45 x 1 =
45 x .1 =
45 x .01 =
45 x .001 =

I will add answers tomorrow.

Multiplying Decimals

We have just begun to talk about what happens to a number when it is multiplied by 10, 100, 1,000, .1, .01, and .001.

For example, when 9 is multiplied by the numbers, you would see:

9 x 10 = 90
9 x 100 = 900
9 x 1,000= 9,000
9 x .1 = .9
9 x .01 = .09
9 x .001 = .009

This shows us that a number multiplied by a 10 will get larger by one place value (9 was a ones but when multiplied by 10, it becomes 90 (or a tens)) and each multiple of ten causes the whole number to grow by that many place values (9 x 100 will grow two place values, 9 x 1,000 will grow by 3 place values, etc...)

On the other hand, if a number is multiplied by a decimal number, then the number will decrease by that number of place values (9 multiplied by .1 will go from a 9 (which is in the ones) to a .9 (which is in the tenths place value) and each time the decimal increases, the number will get smaller than number of place values (9 x .01 will go back two place values, 9 x .001 will go back 3 place values).

More Examples:

3.25 x 1,000 = 3,250
3.25 x 100 = 325
3.25 x 10 = 32.5
3.25 x 1 = 3.25
3.25 x .1 = .325
3.25 x .01 = .0325
3.25 x .001 = .003

.4 x 1,000 = 400
.4 x 100 = 40
.4 x 10 = 4
.4 x 1 = .4
.4 x .1 = .04
.4 x .01 = .004
.4 x .001 = .0004

When multiplied by a whole number, the decimal moves to the right making the number larger; however, when multiplied by a decimal number, the decimal moves to the left making the number smaller in value.

Comparing Decimals Practice

Directions:
For each problem use the greater than ( >), less than (<), or equal symbol to compare the decimals.
1. 3946.55212 _______ 3964.55212
2. 0.84 _______ 0.48
3. 0.98 _______ 0.031
4. 0.99 _______ 0.12
5. 7069.92716 _______ 7096.92716
6. 0.59 _______ 0.51
7. 0.39 _______ 0.065
8. 0.7650 _______ 0.765
9. 0.78500 _______ 78.5
10 0.029516 _______ 0.029539
11 0.04625600 _______ 0.046264
12. 0.9450 _______ 9.45
13. 0.3890 _______ 0.389
14. 0.998 _______ 0.096
15. 925.590085 _______ 925.590022
16. 0.84 _______ 0.095
17. 0.97 _______ 0.79
18. 5521.912210 _______ 5512.91221
19. 0.1350 _______ 0.135
20. 0.925 _______ 0.01

Comparing Decimals

Your child has a study guide to use to help them study for comparing decimals; however, if they have left it at school, then use the below steps to compare decimals.

Step 1: Line up decimals (If it is a whole number without a decimal, then put the decimal at the end of the number behind the ones place).
Example: 15 and .15
15.00
00.15

Step 2: Look at your numbers from left to right because the left side is the greater value and the values decrease as you go toward the right.
Example: For 15 and .15 we start with the tens place and move toward the hundredths place. The 1 and 0 at the front are in the tens place and the 0 and 5 at the end are in the hundredths place.

Step 3: Find the first place where the numbers differ and circle those 2 digits.
Example: I would circle the 1 and 0 in the tens place because they are different and they are the first numbers are different from the left to the right.

Answer: 15 > .15

< means less than, > means greater than, and = means equal to

Go to my website for practice: sites.google.com/site/mrshallumsonlineclassroom

Have a great night!

S. Hallum

New Unit

We are beginning a new unit in math about decimals. Right now we are working with place value from millions to thousandths. Your child has a study guide that they can use to help practice this skill. Above you can find practice problems you can work with to make sure your child understands the different place values.

Have a wonderful week!

S. Hallum

Data Analysis Powerpoint

Data analysis powerpoint

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Math Homework Week of August 30

Math Homework 8/30 – 9/3

Monday: Find the Mean Median Mode and Range for the following sets of data:
1) $56, $110, $34, $100, $25, $56
2) 19, 21, 18, 17, 18, 22, 46
3) 15, 16, 15, 20, 20, 20, 16, 17
Tuesday: Using the sets of data above do the following:
1) Use the first set of data to create a line graph with an explanation on how the data fits a line graph
2) Use the second set of data to create a bar graph with an explanation on how the data fits a bar graph
3) Use the third set of data to create a line plot graph with an explanation
Wednesday: Complete the Interpreting Data Sheet.
Thursday: Study for Friday’s Graphing Assessment

Finding the Mean

When working with the mean of a set of numbers, then you are wanting the average number. This means that your mean should not be greater than your highest value or lower than your smallest number. Remember, finding the mean has two steps: first step, add all of your numbers together; second step, divide the sum that you found by how many numbers are in your set of data.

For example,

George bought a candy bar for $1.50, twizzlers for $3.50, a coke for $0.75, a toy for $2.50, and a ruler for $0.75. What is the average amount he spent at the store?

Well, we know that average is the same as mean, so my first thing will be to add all of my prices together and the total George spent was $11.00.

The next step is to divide the total by how many numbers are in my set of data and George bought 5 items, so there are 5 numbers in my set of data.

The average amount that George spent at the store can be found by dividing $11 by 5 and the answer is $2.20.

Week 1

This week in math class we will be learning about mean, median, mode, and range. Take some time at home to find opportunities to help your child practice these skills in the real world. Maybe there's a graph in the newspaper, or you could even create a graph at home to use to find this information. Have fun with it and be creative!

For a quick refresher, use the following link for definitions: http://www.teachallkids.com/node/112

Have a great week!

Mrs. Hallum

New and Exciting Year!

This year 5th grade will be rotating between teachers for Math, Reading, and Social Studies. I have the pleasure of teaching your child math for the year and I have decided to create this blog to put helpful hints for students to study and practice for classroom skills. I am open to suggestions and comments, so please let me know if a slideshow or video helped you or if I could do something to improve the tool. I look forward to working with each and everyone of you and hope we all have a wonderful school year!

Mrs. S. Hallum
5th Grade Math Teacher
Jordye Bacon Elementary School