Hello friends! We are back again with an interesting topic of mathematics. Today’s topic is most basic topic of mathematics. Today we will learn addition and subtraction for a grade VI of CBSE student.
Addition and subtraction are operations that are performed on numbers.
We will start with Addition. If we talk in general, addition is the operation to total something. Here by total we mean to join two or more numbers. The symbol of addition is “+”.
Example:
Suppose we have two numbers “X” and “Y” and “R” is the total after the addition operation.
X + Y = R
This can be described in words as: “ X plus Y equals to R ”.
Now let’s see this with a number example:
125 + 150 = 150 + 125 = 275
98 + 56 = 56 + 98 = 151
76 + 67 = 67 + 76 = 143
Do you notice something in above examples? No! See if we change the order of numbers then the result will remain the same. It will not change.
101 + 30.5 + 56.75 = 188.25
98.6 + 65.25 = 163.85
72.5 + 25.5 + 99.75 = 197.75
We can add any number by a simple process given below:
Step 1: arrange the digits of the number in column form.
Step 2: Now add it as the single digit number starting from right to left. If carry is generated then count it on the column left to the current column and put the result in the last row.
Example:
Add 123.25+345.50+789.0
1 2 3 . 2 5
+3 4 5 . 5 0
+7 8 9 . 0 0
------------
1 2 5 7 . 7 5
Now let’s move on to subtraction. Subtraction is the operation to taking out something. The symbol of subtraction is minus(–).
Example:
Suppose we have two numbers “X” and “Y” and “R” is the result after the subtraction operation. So the subtraction operation is defined as:
X - Y = R
If it is to be described in words then “ X minus Y equals to R ”.
Now let’s see this with a number example:
49 - 15 = 34 but 15 – 49 = -34
168 – 59 = 109 but 59 – 168 = -109
Do you notice something in above examples? No! Subtraction operation is not same as addition. If we change the order of number then the result will be changed too. In subtraction minus sign is important so the order of numbers is important.
150 - 35 - 47= 68
94.70 – 36.55 = 58.15
191.60 – 13.5 – 50.75 = 127.35
We can subtract any number by a simple process given below:
Step 1: arrange the digits of the number in column form.
Step 2: Now subtract it as the single digit number starting from right to left. If the above number is smaller than the number down then borrow from the number in left column.
Example:
Subtract 987.55-342.25
9 8 7 . 5 5
- 3 4 2 . 2 5
-------------------
6 4 5 . 3 0
The addition and subtraction operations are very easy. You just have to spend little time with them and you will find that you become very good in it.
In next post we will talk on Solve Rational Numbers Problem. For more information on inequality solver, you can visit our website
Addition and subtraction are operations that are performed on numbers.
We will start with Addition. If we talk in general, addition is the operation to total something. Here by total we mean to join two or more numbers. The symbol of addition is “+”.
Example:
Suppose we have two numbers “X” and “Y” and “R” is the total after the addition operation.
X + Y = R
This can be described in words as: “ X plus Y equals to R ”.
Now let’s see this with a number example:
125 + 150 = 150 + 125 = 275
98 + 56 = 56 + 98 = 151
76 + 67 = 67 + 76 = 143
Do you notice something in above examples? No! See if we change the order of numbers then the result will remain the same. It will not change.
101 + 30.5 + 56.75 = 188.25
98.6 + 65.25 = 163.85
72.5 + 25.5 + 99.75 = 197.75
We can add any number by a simple process given below:
Step 1: arrange the digits of the number in column form.
Step 2: Now add it as the single digit number starting from right to left. If carry is generated then count it on the column left to the current column and put the result in the last row.
Example:
Add 123.25+345.50+789.0
1 2 3 . 2 5
+3 4 5 . 5 0
+7 8 9 . 0 0
------------
1 2 5 7 . 7 5
Now let’s move on to subtraction. Subtraction is the operation to taking out something. The symbol of subtraction is minus(–).
Example:
Suppose we have two numbers “X” and “Y” and “R” is the result after the subtraction operation. So the subtraction operation is defined as:
X - Y = R
If it is to be described in words then “ X minus Y equals to R ”.
Now let’s see this with a number example:
49 - 15 = 34 but 15 – 49 = -34
168 – 59 = 109 but 59 – 168 = -109
Do you notice something in above examples? No! Subtraction operation is not same as addition. If we change the order of number then the result will be changed too. In subtraction minus sign is important so the order of numbers is important.
150 - 35 - 47= 68
94.70 – 36.55 = 58.15
191.60 – 13.5 – 50.75 = 127.35
We can subtract any number by a simple process given below:
Step 1: arrange the digits of the number in column form.
Step 2: Now subtract it as the single digit number starting from right to left. If the above number is smaller than the number down then borrow from the number in left column.
Example:
Subtract 987.55-342.25
9 8 7 . 5 5
- 3 4 2 . 2 5
-------------------
6 4 5 . 3 0
The addition and subtraction operations are very easy. You just have to spend little time with them and you will find that you become very good in it.
In next post we will talk on Solve Rational Numbers Problem. For more information on inequality solver, you can visit our website
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