Numbers and Operations

Hello children,Previously we have discussed about real numbers worksheet through this blog we give basic information about the number and operations which helps the beginners to understand complex operations related to the number system. This blog specifically helps Grade IV students of gujarat board to perform their fundamental tasks and solve math problems related to it.

Number system is simply concerned with the set of numbers, their operations and their associated rules. The assignments usually contain the operations such as addition and subtraction.

The following are the number operations which are performed in the number system.

1. Addition: this operation is denoted by plus (+) sign.
2. Subtraction: this operation is denoted by minus (-) sign.
3. Multiplication: this operation is denoted by asterisk (*) sign.
4. Division: this operation is denoted by division (/) sign.

Addition operation is used to add two or more numbers to obtain their sum.

For example: 5+10=15. Through addition we can add large numbers which is shown below:

234+123=357

Subtraction operation is used to subtract one number from another number to find the difference between them. Subtraction operations can be performed on large size numbers, which is shown below:

Example: 456-123=333

Multiplication operation is used to obtain the product of two or more numbers. Multiplication operation can be referred to as repeated addition because it overcomes the limitation of addition in which we have to perform the addition of same numbers several times.

Example:

Calculate 420 * 5

Then the solution is

First, multiply 5*0=0

Second, multiply 2*5=10 then here 1 is carried forward to next number which is 4.

Third, multiply 4*5=20 now add 1with 20 which is carried forward from previous step. Now the final answer is 2100.

Division means undo multiplication which involves a number called the dividend being divided by another number called the divisor. This can be understood by the following example:

Clearly, 2*4=8

Now division is 8/2=4

Above information is enough to understand the numbers & their operations and if anyone want to know about Factors and products then they can refer to Internet and text books for understanding it more precisely. Read more maths topics of different grades such as LCM, GCF, ratios and proportions in the next session here.