Wednesday 30 May 2012

Subtracting Integers

In the previous section we have discussed about adding scientific notation calculator and In today's session we are going to discuss about Subtracting Integers.
We know that the subtraction operation is to be performed when something is to be reduced from the given unit. Now we will learn how to perform the operation of subtraction. Here we will learn it by the help of the following expression:
Subtract -5 from -7
 In this expression, we observe that both the terms are negative. So the given expression can be mathematically expressed as follows:
 = -7 – ( -5 ), so we come to the conclusion that the sign of the second term will be changed when we perform subtraction. So we get “
 = -7 + 5
= -2, here the sign of the second term becomes positive and thus we get the result by performing the addition operation between the two terms as -2.  When we need to learn about Quotient Rule, we must go through the cbse textbooks for class 11 and understand the basic concepts for the same. Now we will find that we perform the subtraction operation between the terms such the subtrahend is a negative number and the minuend is a positive number, then we proceed as follows:
 Subtract -4 from + 6, so this expression will be written as follows:
 = 6 – ( -4 ), so we write that the  sign of the negative number -4 will change to  + 4 and the expression will be written as follows :
= 6 + 4 = + 10
Thus we find the two terms will be added up and we get the result as  + 10, which is the difference of the  two numbers  where the  subtrahend is a negative number and the minuend is a positive number.

Tuesday 29 May 2012

adding scientific notation calculator

In simple terms a scientific notation is a way of writing numbers which are too large or too small and can be written in standard decimal notation. Scientific notation has the number of useful properties which are more commonly used in calculators and also by the mathematicians, engineers and scientists. Exponential notation is the other name of scientific notation. In scientific notation all the numbers are written in the form of
  a * 10b  ; where the b in the exponential form is the integer, the coefficient a is any real number in other words the number 10 is also known as base. Power of ten notation is used to save our efforts. If the decimal moved to the left this means base has the positive exponent. And if it has negative exponent it will move to the right.
There are few steps can be followed to add and subtract any two numbers in the adding scientific notation calculator.
Step 1 is to adjust the power of 10 in the 2 number so that they can form the same index.
Step 2 is to add or subtract the number
step 3 is to give the answer in the scientific notation.
Now we will understand this with the help of the following instance.
Evaluate 3 * 10+ 6.3 * 104 and give your answer in the scientific notation.
Solution : 3 * 10+ 6.3 * 104

= 0.3 * 10+ 6.3 * 10( convert them into the same indices)

= (0.3 + 6.3 ) * 10(add the numbers)

= 6.6 * 10( answer in scientific notation.)

Few of the Algebra 2 problems are difficult to solve, algebra 2 tutor is available online to help you out. Work out TamilNadu board logic sample papers to score high in your examinations and In the next session we will discuss about subtracting integers worksheet.

Tuesday 22 May 2012

subtracting integers worksheet

Previously we have discussed about antiderivative of e and In today's session we are going to discuss about subtracting integers worksheet, We know that integers are all natural numbers, their negative numbers & zero. Since we can do mathematical operations of addition, subtraction, multiplication & division, so we can do all these operations on integers as well. We can further improve our skills by working out subtracting integers worksheet.
Let us know how to subtract integers. We know that on a number line 0 is placed in the centre , all positive numbers on the right side of zero in increasing order & all negative numbers on left side of zero in decreasing order. To subtract any two integers, we can use a number line or can do the same by following the rules of signs associated with integers.(Know more about integers in broad manner, here,)
To subtract the given integers, we first consider their signs. If the two integers to be subtracted have positive sign, we subtract the smaller  number from the bigger & put +ve sign before the answer if smaller number is to be subtracted, while a –ve sign is put if the bigger number was to be subtracted. E.g., 3-7= -4 as 7, the bigger number was to be subtracted. But if it was 7-3, the answer would be 4 as the smaller number is to be subtracted.
While subtracting a –ve number, the –ve sign of the number & the minus sigh together become +, so we actually add the two numbers, e.g., 4-(-9)=4+9=13
To subtract a positive number from a negative number, the two numbers are actually added & a –ve sign is put before their sum, e.g.,(-8)-5=-8-5=-13.
Thus, we see that all the rules relating to addition of integers are followed in subtraction also with the only difference that the minus sign of subtraction combines with the sign of the number to be subtracted & for this combination of the sighs, we follow the following pattern:
-ve & +ve become –ve
-ve & -ve become +ve

We could also learn new topics like Binomial distribution and its also an important topic in andhra pradesh education board.
In the next session we will discuss about Properties of Numbers and  if anyone want to know about factor algebra calculator then they can refer to Internet and text books for understanding it more precisely.