1. The school cafeteria has 18 round tables and 6 rectangular tables. Each round table has 9 chairs, and each rectangular table has 8 chairs. How many chairs are there in all?
2. In a group of 77 students 12 are not wearing the uniform. What fraction of the group is not wearing the uniform?
3. Sue is going to make a chocolate cake. she spent 1/3 of her money on the ingredients and 1/6 on transportation. How much money did she spend and what fraction of money does she have left?
4. A pizza is cut into 24 pieces. Ralph takes 1/4 of the pizza and Silvia takes 1/6 of what is left. How many slices of pizza are left?
5. Ron is 18 years old and his dog is 2/3 of her age. How old is the dog?
April 13, 2011
February 17, 2011
Autonomous Work (April 4th -11th)!
Hi there,
Here you have some problems to solve during the week. I will publish the answers in the weekend.
See you in class!
Remember we need volunteers to post the correct processes for each problem.
Have fun!
Here you have some problems to solve during the week. I will publish the answers in the weekend.
1) Linda is 24 years old and her cat is 3/4 of her age. How old is the cat?
Linda's cat is 18 years old.
Linda's cat is 18 years old.
2) Josie spends 1/5 of her salary in rent and 2/7 in food. What fractions remains?
The fractions that remains for Josie is 18/35.
3) A pizza is cut into 12 pieces. Ralph takes 1/2 of the pizza and Silvia takes 1/3 of what is left. How many slices of pizza are left?
There are 2 slices of Pizza left.
There are 2 slices of Pizza left.
4) 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?
Debra bought 1819 stickers last month.
Debra bought 1819 stickers last month.
5) 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?
Each of Wanda's friends will receive 72 apples
Each of Wanda's friends will receive 72 apples
See you in class!
Remember we need volunteers to post the correct processes for each problem.
Have fun!
February 11, 2011
Fractions practice!
Hi guys,
Here you have the exercises for you to practice for the quiz next Monday Feb. 14th
1. 5 4/8 + 6 3/12 = 11 3/4
2. 7 3/9 - 1 4/5 = 5 8/15
3. 8 2/10 x 7 3/5 = 62 8/25
4. 9 10/9 ÷ 2 1/5 = 4 59/99
5. 4 3/2 - 3 9/11 = 1 15/22
6. 1 3/4 x 1 5/12 = 2 23/48
7. 5 8/9 + 4 3/5 + 7 5/15 = 17 37/45
Remember that I will publish the answers on Sunday morning.
(11:47) "Still Sunday morning"...
Have fun!
David
Here you have the exercises for you to practice for the quiz next Monday Feb. 14th
1. 5 4/8 + 6 3/12 = 11 3/4
2. 7 3/9 - 1 4/5 = 5 8/15
3. 8 2/10 x 7 3/5 = 62 8/25
4. 9 10/9 ÷ 2 1/5 = 4 59/99
5. 4 3/2 - 3 9/11 = 1 15/22
6. 1 3/4 x 1 5/12 = 2 23/48
7. 5 8/9 + 4 3/5 + 7 5/15 = 17 37/45
Remember that I will publish the answers on Sunday morning.
(11:47) "Still Sunday morning"...
Have fun!
David
February 8, 2011
Three New Problems
1. 5 3/12 + 7 4/8 =____
2. 7 5/8 - 7 9/16 = ____
3. 15 5/7 + 7 4/3 = ____
Extra (Santiago O. Ricardo)
Find 2 more exercises (1 Adding and 1 subtracting fractions)
Solve them and present them in class!
Bye!
2. 7 5/8 - 7 9/16 = ____
3. 15 5/7 + 7 4/3 = ____
Extra (Santiago O. Ricardo)
Find 2 more exercises (1 Adding and 1 subtracting fractions)
Solve them and present them in class!
Bye!
February 7, 2011
Adding and Subtracting fractions
Hi guys, as quick as I could...
Along with the answers as I promised...
1. 4 3/4 + 2 4/6 = 7 5/12
2. 9 3/6 - 7 4/8 = 2
3. 9 3/5 + 7 2/9 = 16 37/45
4. 8 2/3 - 1 5/8 = 7 1/24
5. 11 7/9 + 4 4/6 = 16 4/9
6. 10 2/5 - 5 2/10 = 5 1/5
Take your time to analyze the answers.
Remember that the process is more important than the result.
Enjoy!
David
Along with the answers as I promised...
1. 4 3/4 + 2 4/6 = 7 5/12
2. 9 3/6 - 7 4/8 = 2
3. 9 3/5 + 7 2/9 = 16 37/45
4. 8 2/3 - 1 5/8 = 7 1/24
5. 11 7/9 + 4 4/6 = 16 4/9
6. 10 2/5 - 5 2/10 = 5 1/5
Take your time to analyze the answers.
Remember that the process is more important than the result.
Enjoy!
David
February 4, 2011
Adding mixed fractions
Hi fourth graders! Here you have some addition exercises. Remember we learn two ways of adding, Can you remember both?
Practice, practice...
a. 4 2/3 + 2 1/3
b. 3 1/2 + 1 1/4
c. 5 7/9 + 3 1/3
d. 5 2/5 + 1 3/10
e. 4 7/12 + 1 2/3
f. 2 3/5 + 2 3/10
g. 3 2/3 + 4 1/12
h. 5 1/6 + 1 11/12
i. 2 1/8 + 3 1/2
j. 1 1/5 + 1 3/4.
Have fun!
Practice, practice...
a. 4 2/3 + 2 1/3
b. 3 1/2 + 1 1/4
c. 5 7/9 + 3 1/3
d. 5 2/5 + 1 3/10
e. 4 7/12 + 1 2/3
f. 2 3/5 + 2 3/10
g. 3 2/3 + 4 1/12
h. 5 1/6 + 1 11/12
i. 2 1/8 + 3 1/2
j. 1 1/5 + 1 3/4.
Have fun!
February 3, 2011
Mixed Numbers Word Problems
Here's two new word problems for you!
1. At my birthday party, the girls ate 3 1/2 pizzas and the boys ate 7 1/2 pizzas. How many pizzas were eaten at my party?
2. I bought 2 1/2 gallons of paint, but I only used 2/4 gallons of the paint. How much paint do I have left?
1. At my birthday party, the girls ate 3 1/2 pizzas and the boys ate 7 1/2 pizzas. How many pizzas were eaten at my party?
2. I bought 2 1/2 gallons of paint, but I only used 2/4 gallons of the paint. How much paint do I have left?
January 25, 2011
Fractions
Hi there fourth graders,
Remember we are about to start working with fractions, so the more time you use to reinforce the concepts of factors, multiples and practice working with decomposition the better. You really need to know this in order to begin with fractions.
We already had a quick look at Greatest Common Multiple (GCM) & Least Common Factor (LCF), also key topics to understand before jumping into fractions. Here you will find some links (Go to "Useful and Quite Interesting Links" section) to better understand and practice with these terms.
Remember we are about to start working with fractions, so the more time you use to reinforce the concepts of factors, multiples and practice working with decomposition the better. You really need to know this in order to begin with fractions.
We already had a quick look at Greatest Common Multiple (GCM) & Least Common Factor (LCF), also key topics to understand before jumping into fractions. Here you will find some links (Go to "Useful and Quite Interesting Links" section) to better understand and practice with these terms.
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