Monday, March 18, 2013

Math Integer Practice

Introduction to math integer practice:

In mathematics, integer is one important topic in number representation. Integer contains a set of numbers in which there are two types of integer which are non negative integer and negative integer. Integer has a complete entity or unit. No fractional part in integer. Integer performs the arithmetic operations of addition, subtraction, multiplication and division. Let us solve some example problems and also some practice problems for integer in math.

Example for integer:

2254, - 5164, 0 etc,


Math integer practice - Example problems:


Some example problems for integer in math are,

Example 1:

Using addition operation, simplify the given integers

1452 + 3567

Solution:

Given two integer numbers are

1452 + 3567

Given integers are positive so the result is also a positive integer

Here we add 1452 into 3567, and we get the result

1452 + 3567 = 5019

Solution: 5019

Example 2:

Using subtraction operation, simplify the given integers

1858 – 964

Solution:

Given two integer numbers are

1858 – 964

Given integers are positive so the result is also a positive integer

Here we subtract 1858 into 964, and we get the result

1858 – 964 = 894

Solution: 894

Example 3:

Using multiplication operation, simplify the given integers

5467 × 2487

Solution:

Given two integer numbers are

5467 × 2487

Given integers are positive and the result is also a positive integer

Here we multiply 5467 into 2487, and then we get the result

5467 × 2487= 3596429

Solution: 13596429

Example 4:

Using division operation, simplify the given integers

1856 ÷ 32

Solution:

Given two integer numbers are

1852 ÷ 32

Given integers are positive and the result is also a positive integer

Here we divide 1852 by 32, and then we get the result

1852 ÷ 32 =  58

Solution: 58

Example 5:

Using multiplication operation, simplify the given integers

3275 × - 137

Solution:

Given two integer numbers are

3275 × - 137

Given integer has both positive integer and negative integer so; the result is a negative integer

Here we multiply 3275 into - 137, and then we get the result

3275 × - 137 = - 448675

Solution: - 448675

Example 6:

Using addition operation, simplify the given integer

- 1206 + (- 2752)

Solution:

Given two integers is

- 1206 + (- 2752)

Both are two negative integers so, the result is also a negative integer

Here we add - 1206 into - 2752, and then we get the result

- 1206 - 2752 = - 3958

Solution: - 3958.

Having problem with Positive and Negative Integers keep reading my upcoming posts, i will try to help you.

Math integer practice - Practice problems:


Problem 1:

25056 + 10745

Answer: 35801

Problem 2:

7856 – 3745

Answer: 4111.

Problem 3:

526 × 415

Answer: 218290

Problem 4:

`3350/134`

Answer:  25

Problem 5:

- 1006 + 63

Answer: - 943

Problem 6:

- 56 – 2045

Answer:  - 2101.

Problem 7:

- 199 × 2451

Answer:  - 487749

Problem 8:

`1972/34`

Answer:  58

Wednesday, March 13, 2013

Average Formula Math

Introduction of average:

In mathematics,when the addition of given terms is divided by the total number of terms, it is called average. The other name of average is mean. It is used in educational institutions and in industries. In educational the student performance is calculated by using this average.If the average is high then the object is good other wise it is bad. Understanding Calculate Weighted Average is always challenging for me but thanks to all math help websites to help me out.


Average formula in mathematics:


Average formula in mathematics:

Formula for average is,

Average=Addition of given terms/ Total number of terms

Consider if there are n terms and if we want to find the average of first terms means then the formula of average in maths in written as follows.

Average=`(n_1+n_2+n_3+n_4+n_5)/n`

It also produces the mean value of the given numbers. If the given number set is odd, then the centre value is the mean or average value of the given set. For the above formula the average value may be n3


Examples for average in maths:


Examples for average in maths:

Example:1

Neha got the marks as follows. Tamil:93, English:88, Maths:100, Science:99, Social science:96 Find the average of Neha.

Solution:

Given,

Step 1: Total number of subjects are 5

Step 2:

Tamil (T)=93

English(E)=88

Mathe(M)=100

Science(S)=99

Social science(SS)=96

Step 3: Formula for finding average is,

Average=`(T+E+M+S+SS)/(Total)`

=`(93+88+100+99+96)/5`

=`476/5`

=95.2

Average of Neha is 95.2. The average of this student is high hence the performance of the student is good.

Example:2

Find the average of given set of values. 22,55,33,44

Solution:

Step 1:Given numbers are 22,55,33,44

Step 2:Total number of terms are 4

Step 3: Formula for finding average=Sum of given terms/Total number of terms

=`(22+55+33+44)/4`

= `154/4`

= 38.5

Average of the given numbers 22,55,33,44 is 38.5

Having problem with Cosine Calculator keep reading my upcoming posts, i will try to help you.

Practice problems for average in maths:


Problem:1

Find the average of n numbers. The numbers are 89,56,23,100,58,48,79,84

Ans:67.125

Problem:2

Find the average of n numbers. The numbers are 98,65,32,85,97,80,63

Ans:74.28

Problem:3

Calculate average for the given numbers. 1,1,3,17,19,25

Ans:11

Monday, March 11, 2013

Simple Solutions Math

Introduction to simple solutions math:

The simple solutions include the algebraic solutions using the simple operations like addition, finding the factors for the equation and also find the values for the linear equations. The simple solutions for the math include the basic operations for the complex numbers. The basic operations include the addition, subtraction, multiplication and also the division. Please express your views of this topic Absolute Value of a Complex Number by commenting on blog.


Examples for simple solutions math:


Example 1 for simple solutions math:

Find the value of x for the linear equation 2x +80 =12.

Solution:

The given linear equation is 2x +80 =12.

Subtract 80 on both sides of the equation to get the value of x.

2x+80-80 =12-80

2x= -68

x= -34

The value of x for the linear equation x+54 =10 is -34.

Example 2 for simple solutions math:

Find the values of x and y from the equation 2x+ 2y =5 and x - 2y = 10.

Solution:

The given equations are 2x+ 2y =5 and x - 2y = 10.

For finding the values for the equations, first remove x or y from the two equations.

2x+ 2y =5

x - 2y = 10

-----------------

3x =15

-----------------

Divide by 3 on both sides of the equation.

`(3x)/3` =`15/3`

x =5

Substitute the value of x in the equation (1) to get the value of y.

2 (5)+ 2y =5

10+ 2y =5

Subtract by 10 on both sides of the equation.

10+ 2y-10 =5-10

2y =-5

y =-`5/2`

The values of x and y for the equation 2x+ 2y =5 and x - 2y = 10 are x=5 and y=-`5/2` .

Example 3 for simple solutions math:

Find the value for the complex number (2+10i) + (3+16i).

Solution:

The given complex number is (2+10i) + (3+16i).

In this we have to add two complex numbers. Add the real part separately and add the imaginary part separately.

(2+10i) + (3+16i) = (2+3) + (10i + 16i)

(2+10i) + (3+16i) = 5 +26i

The value for the complex number (2+10i) + (3+16i) is 10+26i.

Is this topic Images of Obtuse Angles hard for you? Watch out for my coming posts.

Practice problem for simple solutions math:


Find the value for x+31= 182.
Answer: 151

Find the roots for the algebraic equation x2+5x +15=0.
Answer:  x= -3, -5

Monday, March 4, 2013

Math The Easy Way

Introduction of math the easy way:

Mathematics plays an important role in the human life. The math is generally a simple subject which saves the time for working. The persons who understand the math in step by step manner feels the math has a easy way of subject. Those who neglect the math will sure losses the part of knowledge in their life. If we go for a purchase we should count the amount of money we have in our pocket. So the math is the easy way for solving. Please express your views of this topic Formula for Pythagorean Theorem by commenting on blog.


The easy way of math:


Math is the easy way for understand. The math is the universal acceptance of the language throughout the world. The c, c++ is the languages which are similar to math. The math involves in every fact in our life. The math can’t be changed due to the changes for the location or the weather variation in the area.

The equal sides intersect and center of the edge is made opposite to this vertex. The two angles are made to join with the edges. The three sides are same, which goes the angles are made same. In equilateral triangles there are mostly symmetric which we take it through any corner to corner and any side to side. The shape is mentioned as regular shape.

Some of the rules which make math easy are,

Multiplication:

Negative * Positive = Positive

Positive *Negative = Negative

ADDITION:

Positive + Positive = Positive

Negative + Negative = Negative

Dividing Rules:

Positive ÷ Positive = Positive: 12 ÷ 3 = 4

Negative ÷ Negative = Positive: (-12) ÷ (-3) = 4

Negative ÷ Positive = Negative: (-12) ÷ 3 = -4

Positive ÷ Negative = Negative: 12 ÷ (-3) = -4

Is this topic Exponential Growth Activity hard for you? Watch out for my coming posts.

Example for math the easy way:


Compute the simplest form of the fraction 10/14.

10/14 = (2 x 5)/ (2 x 7)

Example:            What is 5+ (-2)?

From above: + (-) becomes a negative sign.

5+ (-2) = 5 - 2 = 3

Answer: 5+ (-2) = 3

Example: What is -6+ (+3)?

From above: + (+) becomes a positive sign.

-6+ (+3) = -6 + 3

Start at -6 on the number line, move forward 3, and you end up at -3

Answer: -6+ (+3) = -3.

Sunday, March 3, 2013

Constant Ratio Math

Introduction to constant ratio math:

The constant ratio in math is the ratio of the two numbers. Take any two numbers a and b, the ratio of those two numbers is represented as a: b, in this b must be the non zero number. The multiplication and division of the terms of the ratio by the same number does not affect the ratio. The constant ratio can also be represented as a/b. Please express your views of this topic Math Ratios by commenting on blog.


Examples for constant ratio math:


Example 1 for constant ratio math:

The mixture contains the water and the oil in the ratio 3:8. The water is 100 liters. What is the quantity of the oil?

Solution:

The  ratio of the water and the oil is 3:8.

The amount of the water is 100 liters.

Let oil be x liters.

Water/ oil= 3/8

100/ x= 3/ 8

Perform cross multiplication. We get,

100 x 8= 3x

800 = 3x

Divide by 3 on both sides of the equation. We get,

x= 800/3

x=266

The quantity of the oil in that mixture is 266.

Example 2 for constant ratio math:

Divide 200 in the ratio of 2:3.

Solution:

The given ratio is 2:3.

The sum of the ratio is 2+3 =5.

For the ratio 2,

200 x (2/5) = 80.

For the ratio 3,

200 x (3/5) = 120.

Example 3 for constant ratio math:

Find the simplified ratio for 121: 169.

Solution:

The given ratio is 121: 169

The above ratio can be written as 11^2: 13^2.

The ratio can be simplified as 11: 13.

The ratio 121: 169 can be simplified as 11: 13.

Is this topic All the Odd Numbers hard for you? Watch out for my coming posts.

Practice problem for constant ratio math:


Divide the amount 100 in the ratio 1: 4.
Answer: for 1 the amount is 20, for 4 the amount is 80.

The mixture contains water and alcohol in the ratio of 1: 9. The quantity of the water is 20 liters. Find the quantity of the alcohol in liters.
Answer: 180 liters.

Simplify the ratio 64: 216.
Answer: 4:6

Tuesday, February 26, 2013

Math Number Activities

Introduction to math number activities:

Math number activities   is defined as understanding the concepts, ideas, problems concerning with different numbers according to their studies and practice. Math number sense is not a separate set of skills to be learned in a month or two, it is understand by daily practice and working with the problems.  Through math number, students can have interactive learning with animations. Math number activities learning are very comfortable and easy. Moreover, math number activities are one to one learning. Having problem with Multiplication of Rational Numbers keep reading my upcoming posts, i will try to help you.


Problems for math number activities:


Operations in math number activities:

Place value for number activities

Example1:

Find the place value of the underlined number 987.

Solution:

Here, 7 - 1's place

8 - 10's place

9 - 100's place.

Hence the number 9 is in 100's place

Example2:

Find the place value of the underlined number 1780.

Solution:

Here, 0 - 1's place

8 - 10's place

7 - 100's place.

1 - 1000's place

Hence the number 1 is in 1000's place.

Math number activities for Expanded form:

Example 1:

Write the given number in expanded form, 976.

Solution:

Here, the given number is in standard form,

The expanded form of the number is,

976 = 900 + 70 + 6.

Example 2:

Write the given number in expanded form, 2026.

Solution:

Here, the given number is in standard form,

The expanded form of the number is,

2026 = 2000 + 0 + 20 + 6

Please express your views of this topic List of Irrational Numbers by commenting on blog.

Problems for math number activities:


Math number activities written form:

Example 1:

Write the given number in word form, 123.

Solution:

The given number is in standard form,

The word of the number is,

123 = One hundred and twenty three.

Example 2:

Write the given number in word form, 746.

Solution:

The given number is in standard form,

The word of the number is,

746= Seven hundred and forty six.

Example 3:

Write the given number in word form, 6026.

Solution:

The given number is in standard form,

The word of the number is,

6026= Six thousand twenty six.

Monday, February 25, 2013

Answers to Math Probelms

Introduction to math Problems:

The math is divided into the following main concepts they are

Algebra
Geometry
Probability


The basicfour mathematical opeartions are mainly used in mathematics. They are

Add
Sub
Multiply
Divide
In this topic we have to discuss about example problems for each topic in math.

Please express your views of this topic Simple Probability by commenting on blog.


Example Problem in Algebra


The nine times of the number is subtracted from 63 and the resultant value is equal to 117. Find the answer for that unknown number.

Answer:

Let us assume that unknown number is the variable u. then nine times of the number is equal to 9u. And it is subtracted from 63 therefore 63 – 9u. Then this value is equivalent to 63 – 9u =117

The given algebraic expression can be written as

63 – 9u =117

Subtracting the value 9u on both sides we can get,

63 – 9u + 9u= 117 + 9u

That is 63 = 117 + 9u

Subtracting the value 117 on both sides we can get,

Then, 63-117 = 117 + 9u -117

That is -54 = 9u

Dividing the value 9 on both sides we can get,

-6 =u

This is the answer for u.

This is basic example of algebra problem.


Example Problem in Geometry


The angles in the quadrilateral shape are x, 2x, x, 2x find the measurement of the angles.

Answer:

The property says that the sum of the four angles in the quadrilateral is equal to the measurement of 360 degree.

Therefore we can written as,

X + 2x + x + 2x = 360 degree

That is 6x =360 degree

Dividing 6 on both sides we can get,

X= 60 degree

Therefore 2x = 120 degree

Then the angles of the quadrilaterals are 600, 1200 and 600, 1200

This is basic example of geometry problem. I have recently faced lot of problem while learning Non Isosceles Trapezoid, But thank to online resources of math which helped me to learn myself easily on net.


Example Problem in Probability


A coin is tossed at one time. Calculate the probability that the side of coin be head.

Answer:

Total probability of tossing a coin at a time = {H, T}

Therefore number of sample space =2

Find the probability of head = {H}

Therefore number of times event occurred =1

Therefore the probability = `(1)/(2)`

These are the basic math problems.