Current Affairs 2nd Class

  Addition of Four Numbers      This addition also goes on the pattern of the previous additions except 4 numbers are involved in it.   Let's see the example given below:     Solution: Let's see another example given below:           Solution:     Addition of 4 numbers can also be done by adding two numbers at one time and the adding the remaining in the next time. Finally we add the results of both the additions for example to add. , follow these steps.     Step I: Addand     Step II: Addand     Step III: Add, step I and Step II Thus this approach is also very useful while adding four numbers.  

  Addition of Three Numbers     Let's understand it through an example.   Solution:    

     Addition of two Numbers     In this addition only two numbers are involved for example, Solution: It is a single digit addition but when we have more than one digits in numbers, the rules given below will be applied:     Rule 1 Start addition with the 1st digit from right then 2nd digit from the right and the process goes on. In another words, add ones 1st, then tens, then hundreds and so on.       Solution:     Rule 2 If addition of ones gives result in 2 digits then add the left digit of the result with tens and the process goes on.     Solution: Here, the left El of n is added to [4] as below:

  Introduction   From class, we know that addition is the grouping of more than one units together and making them a single unit. Here,andhave been grouped together for making the single number.  

   Nearest Hundred     Number for nearest hundreds can be:                                      and Thus whenever we have to find nearest hundreds, we come to the any of the above mentioned numbers in hundreds and find it by choosing the number which is closer to the given number. If we have to find nearest hundred forthen our answer will be . But if we have the numberthen the nearest hundred will be. Remember for the number like the nearest hundred will be both the hundreds between which these numbers lie. For example: Nearestfor is bothand.          

• One in a number is the digit from right.
• Tens in a number is the digit from the right
• Hundreds in a number is the digit from the right
• Thousands in a numbers is the digit form the right
• Minimum two digit number is required to identify tens.
• Minimum three digit number is required to identify hundreds.
• Nearest ten is identified for a number that lies between two tens.
• Nearest ten for the numbers betweenandwill be or  
• Nearest is identified for a number that lies between two hundreds.
• Nearest hundred for numbers between and will be or .    

     

• Putting one zero to the right of a number increases the number 10 times.
• 10 is the smallest 2 digit number.  

   Nearest Ten     Thus whenever, we have to find nearest tens, we come to the any one of the mentioned numbers given below out which is in tens and find it more closer to the given number.   and   If we find nearestof the number, thenis the answer. But if we have the numbers likeororor, then their nearest ten is.     Here, andare closer to 60 than that ofand hence, for numbers from 61 to 64 the Nearest ten is. But when we see the numbersandthey are closer tothan that ofand hence, for these numbers nearest ten is.                       And in case of 65, the nearest number isbecause betweentoand betweento there are equal numbers but we take 70 as the nearest ten.

    Identifying Thousands in a Number     For the identification of thousands in a number, the number should be of four or more digits. To obtain the place value of digit at thousands, the digit is multiplied by 1000.     What is the place value of digit 9 in 569873. (a) 9873                                                (b) 900 (c) 9000                                                (d) 90     Answer (c) Explanation- Digit 9 is at thousands place.       If digit at thousands place of a number is one less than the digit at hundreds place, and digit at hundreds place is one less than the digit at tens place, find the number, if digit at tens place is 1 less than the digit at unit place and digit at unit place is 8. (a) 5678                                (b) 4568 (c) 7658     (d) None of these   Answer (a) Explanation- Digit at tens place is 1, 6 is at hundreds place and 5 is at the thousands place.

    Identifying Hundreds in a Number   Let's understand it through an example: If we have, then is the digit at the place of hundreds.   Take another example: In is the digit at the place of hundreds. Thus it is clear from the above mentioned examples that without havingdigits number, we cannot determine the digit positioning at the place of hundreds. It must be noted that in a three or more digit numbers, the digit at the place of hundreds is the 3rd from the right side.     Hence, Inis the digit at the place of hundreds. Inis the digit at the place of hundreds. Inis the digit at the place of hundreds. And the rule goes the same for any or more digit numbers. Now you know about ones, tens and hundreds. Now find ones, tens and hundreds in a single number.     For example, in is the digit at the place of onesis the digit at the place of tens andis the digit at the place of hundreds. It can be presented in the following way:   hashundreds,tens andones.   Similarly in 256,   hashundreds,tens andones.

  Identifying Tens in a Number     Let's understand it through an example: Here, we have a number then is the digit at ten's place. Similarly in, the digit is at ten's place. Thus it is clear from the above mentioned examples that in any number the 2nd digit from the right hand side is the digit at ten's place.     Hence, In is the digit at ten's place. In is the digit at ten's place. In is the digit at ten's place. and the rule goes same for any number which has two or more digits.     See the following:       has                   tens.         has                   tens.         has                   tens.   Note: It is important to remember that to determine tens in a number, the number must have at least digits.

   Identifying Ones in a Number     To understand it let's see an example given below: Here, we have a number, thenis the digit at one's place.     Take another example: If we have a number, thenis the digit at one's place. Thus it is clear from the above mentioned examples that in any number thedigit from right hand side is the digit at one's place.     Hence, In is at the place of ones. In is at the place of ones.