# 5th math

posted by pat

what is the least common multiple (LCM)for 15 and 45?

There are 16 girls in a class of 36 student. which expression could be used to determine the number of boys (b) in the class?

please! help i think this too hard for 5th grade math. this suppose to be for 10th or college level instead of me..i don't even understnd this problem.

1. Ms. Sue

These are not college or high school problems. They are part of the normal 5th grade curricula.

Check this site for LCM instructions.

http://www.mathsisfun.com/least-common-multiple.html

Let x = the number of boys in the class.

36 - 16 = x

2. Writeacher

I agree with Ms. Sue. These are definitely in a good 5th grade math curriculum. My granddaughter is in 5th grade this year, and she has had this level of work for over a year now.

3. pat

can you show how to do the median ?

what is the median for the following numbers?

142,83,65,178,14,78.
i think 83 is the answer.

36/16=B THE ANSWER FOR EXPRESSION FOR .36 STUDENTS 36/16=20 BOYS THE ANSWER

4. Writeacher

http://www.purplemath.com/modules/meanmode.htm
"The median is the middle number. In this example, the numbers are already listed in numerical order, so I don't have to rewrite the list. But there is no "middle" number, because there are an even number of numbers. In this case, the median is the mean (the usual average) of the middle two values: (2 + 4) ÷ 2 = 6 ÷ 2 = 3"

14, 65, 78, 83, 142, 178
So you need to find the average (mean) between 78 and 83. How will you do that?

5. Sivashen

LCM=3

let x=total students
let y=total girls
let z=total boyz

z=x-y
z=36-16
z=10

6. Anonymous

Visitors to an art musuem were asked to
name a favorite type of art.Pottery was
named by 9/40 of the visitors, paonting
was named by 2/5, and sculpture was
named by 3/8. What was the favorite type of art of most visitors ?

THIS IS SOOOOO HARD !!!! PlEaSe HeLp

7. ztram backwards

lcm=45
36-16=boys

By the way i learned this before 5th grade

8. CRAZYPOOPMONSTER

This seems very easy..

## Similar Questions

1. ### 5th math

Mr. davison has 30 students in his class . He has four more girls than boys. How many boys are in Mr. Davision class?
2. ### Math

In a middle school 5th grade class there are 5 girls for every 4 boys. all together the class has 27 students. How many boys are in the class?
3. ### math

There are 24 students in Mr.Hills class. The number of boys and number of girls are both prime numbers. There are 2 more boys then girls. How many boys and how many girls are in each class?
4. ### math

There are 27 students in Mrs. Reeds class. The number of boys and number of girls are both composite numbers. There are 3 more girls than boys. How many girls and how many boys are in the class?
5. ### algebra

Classes A and B have 35 students each. If seven girls shift from class A to class B, then the number of girls in the classes would interchange. If four girls shift from class B to class A, then the number of girls in class A would …
6. ### algebra

Classes A and B have 35 students each. If seven girls shift from class A to class B, then the number of girls in the classes would interchange. If four girls shift from class B to class A, then the number of girls in class A would …
7. ### math

there are 15 boys and 10 girls in your class. a faur member committee is to befromedfrom the student of your class. in how many ways this can be done if the comittee consists at least three girls
8. ### Mathematics

There are 5 girls more than boys in a class. if 2 boys joined the class the ratio of girls to boys is 5:4. find the total number of student in the class.
9. ### maths

There 168 students in a school. There are twice as many girls as there are boys. a) Calculate the number of girls in the school. b) the students are to be divided into seven classes so that each class has the same number of girls and …
10. ### Geometry

When Ms Shreve randomly selects a student in her class, she has 1/3 probability of selecting a boy. A: If her class has 36 students, how many boys are in her class?

More Similar Questions