5th math

posted by .

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.

  • 5th math -

    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

  • 5th math -

    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.

  • 5th math -

    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

  • 5th math -

    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?

  • 5th math -

    LCM=3

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

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

  • 5th math -

    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

  • 5th math -

    lcm=45
    36-16=boys


    By the way i learned this before 5th grade

  • 5th math -

    This seems very easy..

Respond to this Question

First Name
School Subject
Your Answer

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