Math Worksheets

Archive for July, 2010

Question: i need help for my bio poem its for math?

today my teacher gave me a worksheet and its a biopoem and he said to put anything thats math related and i put Multiplication i dont know three traits to describe it,lover of,who needs,who feels,who fears,who gives,who would like to see,resident of and new ways of naming.!please help me

Answer: You are to do anything math related, not a mathematician, a person?

Multiplication could be something like: lover of numbers, who needs Addition (because it’s repeated Addition), who fears Division (since it undoes Multiplication), who gives products (since that’s what you call the answer to Multiplication), who would like to see large numbers, resident of equations, named Addagain, Increaser…

Multiplication by Fours & Sixes, Learning the Times Table Stars

Here are some free math suffix worksheets. First we are going to introduce the suffix and suffix meanings. Below is a list of suffix meanings often used in math. Once you know some suffixes, you can use the math suffix worksheets to practice learning suffix meanings. Also check out our suffix lesson plans. 

 

Math suffix definitions and suffix meanings

Suffix	Suffix meaning	Suffix example
-centenary	of or pertaining to a 100 year period	tercentenary (of or pertaining to 300 years)
-gon	figure having a specified number of interior angles	polygon, hexagon
-hedral	surfaces or faces of a given number	dihedral formed by 2 plane faces
-hedron	figure having a given number of faces or surfaces	polyhedron (a solid with faces that are Polygons), heptahedron (polyhedron with 7 faces)
-lateral	of, at, or relating to sides	equilateral (all equal sides)
-metry	science or process of measuring	Geometry
-sect	cut or divide	bisect (cutting or dividing into 2 equal parts)

Question: high school math: probability. please help!?

I have a worksheet on probability for algebra 2, but i do not understand a lot of the problems. If you could help me with any or all, that would be great! Thanks soooo much!

Four coins are tossed. Find the probabitily that AT LEAST three of the four come up heads.

A penny, a nickel, and a dime are tossed. Specify the event that at most one coin turns up tails.

At a high school there are two administrators and three counselors who park in three reserved places. In how many ways could these spaces be occupied by the cars belonging to these people?

Mr. Rhee’s car has a probability of 70% of starting, and Ms. Rhee’s car has an 80% probability of starting. What is the probability that
1. neither car will start?
2. both cars will start?
3. either both cars or neither car will start?
4. exactly one of the cars will start?

thanks again!!!!

Answer: * Four coins are tossed. Find the probabitily that AT LEAST three of the four come up heads.

State the chance of each outcome. For tossed coins, it’s a have chance for every head or tail.
List the permutations. For example:

head head head head,
head head head tail,
head head tail head,
head tail head head
…and so on.

The chance of any one of these working out can be found by multiplying.
1/2 * 1/2 * 1/2 * 1/2 … which is 1/16, so that’s the chance of each line in your list of permutations.

Five outcomes satisfy the ‘at least three heads’ requirement, so the chance is 5/16.

—

* A penny, a nickel, and a dime are tossed. Specify the event that at most one coin turns up tails.

List the permutations again.
heads heads heads
heads heads tails
heads tails heads
tails heads heads
tails heads tails
tails tails heads
heads tails tails
tails tails tails

Each has a 1 in 8 chance of happening because 1/2 * 1/2 * 1/2 = 1/8

How many satisfy your ‘tails’ requirement? Four.

So the chance is 4/8 … which is 1 in 2.

* At a high school there are two administrators and three counselors who park in three reserved places. In how many ways could these spaces be occupied by the cars belonging to these people?

This question has no probability in it, but requires you to list all the different combinations that might happen. Thus:

admin admin counselor
admin counselor admin
counselor admin admin
counselor counselor admin
counselor admin counselor
admin counselor counselor
counselor counselor counselor

There’s your answer. There are seven different ways in which the spaces could be used.

* Mr. Rhee’s car has a probability of 70% of starting, and Ms. Rhee’s car has an 80% probability of starting. What is the probability that

p(Mr. Rhee’s car starting) = 0.7
p(Mrs. Rhee’s car starting) = 0.8

1. p(neither starts) = 0.3 * 0.2 … or (1 – 0.7) * (1 – 0.8) = 0.06 … or 6%
2. p(both start) = 0.7 * 0.8 = 0.56 … or 56%
3. p(either both cars or neither car will start) =
p(neither starts) + p(both start) = 0.56 + 0.06 … or 62%

4. p(exactly one of the cars will start) =
p(Mr. Rhee’s car starting) * p(Mrs. Rhee’s car NOT starting) +
p(Mr. Rhee’s car NOT starting) * p(Mrs. Rhee’s car starting)

= (0.7 * 0.2) + (0.8 * 0.3) = 0.14 + 0.24 = 0.38 … or 38%

Simplifying Algebraic Fractions