November 15, 2010

Welcome Back! November 15th-21st

Here's some problems for you to keep practicing.

Check out the new links to investigate some more about prime numbers.

1. Mr. Jones wants to have a party to celebrate the 34th birthday of his wife. He wants to buy enough beverages and food for everybody. A case of soda serves for 9 people and costs 15 dollars and a bag of chips serves for 11 people and costs 7 dollars. He plans to invite 282 people. How many cases of soda and bags of chips does he need? How much money is he going to spend altogether?

2. Remember how to find the first 100 prime numbers? Really?

Use a blank piece of paper to do it and then compare with a list of prime numbers (Classroom). How much time did you spend doing this?

3. A problem created by one of your classmates:

Shane has 6 boxes, each box has 10 bags, each bag has 19 candies, how many candies does Shane have? and if he wants to share the candies to 15 of his friends how many candies will each friend get? does Shane have 1 candie for mom and 1 candie for dad?

October 19, 2010

Last Week Before Recess Week

Hi There everybody!

As this is the last week before your 1 week break, we are going to be devoted to the correction of the Math exam, specifically of the word problems. Remember that the most important part is the PROCESS not the result, so you have to keep working on the processes you use when solving a problem.
In case you wonder, you are not handing out the reading blog for this week either.

Have a good week and use time wisely!


October 12, 2010

Math Evaluation

 Hi there Fourth Graders!

The final evaluation is close... So, some of the time you spent on Internet should be devoted to practice for this final exam. Remember to complete the study guide and to have a good night rest before Wednesday 13th.


October 1, 2010

Multiples and Factors

Hi there 4th graders,

There are no problems for you today. Still, we invite you to visit the following links where you will find information related to factors and multiples; the last topic of this unit that is also going to be evaluated. So have a look at the following links, one of them is a very nice game, and if you find any more that you want to share with us please talk to any of the 4th grade teachers.

See you in class!

September 27, 2010

New Word Problems (Sep. 27th - Oct. 1st)

1. Debra went to the store 17 times last month. She buys 107 stickers each time she goes to the store. How many stickers did Debra buy last month?

2. Wanda has 36 boxes of apples. Each box holds 24 apples and there are 9 boxes in a case. If Wanda wants to equally distribute the apples in 12 of her friends. How many will each one receive?

3. Linda went to the store 8 times last month. She buys 93 bananas and 12 erasers each time she goes to the store. She wants to equally give all her bananas to 24 different organizations. How many will each organization receive?

4. The school cafeteria has 11 round tables and 2 rectangular tables. Each round table has 3 chairs, and each rectangular table has 6 chairs. How many chairs are there in all?

5. The sum of two numbers is 9. Their product is 14. What are the two numbers?

September 20, 2010

1 Week Break

Hi there everybody:

We are going to have a break from our problems during this week. I will post a new series of problems on Monday September 27th, for you to solve them and have them ready to check in class on Monday October 4th...

September 15, 2010

Problems for September 20th to 27th

A little late, but still here they are!
1. There are three paintings on each of three walls of a room. If an art gallery has 7 such rooms, how many paintings are there in its collection?
2. Carl has two dozen donuts to give to his friends. His mom arrived and brought 26 more. How many donuts can Carl give to each of his 6 friends? Can he save some donuts to eat later?
3. There are 25 balloons in a a bag. There are 15 bags in one box. How many balloons are there in 10 boxes.

4. The school chorus has 108 members. How many rows of 12 members can be formed?
5. Complete the following pattern: 1, 9, 33, 105, 321, ____

September 6, 2010

Second Problems (September 6th to 13th)

1. There are 2 dozen books about our solar system and 66 about outer galaxies. The teachers in fourth grade want to divide them evenly among 6 groups of students. How many books does each group get?

2. Elliot can play the song "Fly Me to the Moon" on the piano in 5 minutes. He must practice this song for two hours. How many times can Elliot play the song during practice?

3. Carl spends $36 on gas for his boat each Saturday and another $42 each Sunday. How much does Carl spend in gas in 8 weeks.

4. The library received 17 boxes with 68 books each. 6 were sent back because they were broken. The Library had to equally distribute those books in 5 stores. How many books were sent to each store?

5. Complete the following pattern:          1,  4,  10,  22,  46, _____

August 25, 2010

First 5 problems

1. 52 people went to the parent's meeting. If 4 people share a table, then how many tables are needed?

2. A cinema has 45 rows with 32 seats each. To Avatar's premiere 984 students attended. How many seats were not occupied?

3. 12 boxes of mangoes were delivered to a factory, there were 42 mangoes in each box. Of all mangoes 4 were rotten and had to be thrown away. The remaining mangoes were packed into boxes of 5 mangoes each to send to various supermarkets. How many boxes of mangoes were sent to the supermarkets?

4. There were 8500 spectators (men and women) at a soccer match, 6476 were men. Of the remaining spectators how many were women?

5. In a box, there are 441 color pencils that have to be handed out to to three different classes. If each class has 49 students. How many color pencils will each student receive?

August 23, 2010

First Post

Hi there fourth graders,

We are going to post 5 word problems each Monday, for you to solve them during that week and for us to check them in class every Monday. Remember that you have to show the operations and the written answers; drawings are optional!

The fourth Grade Team