1st Class Mathematics Back & Forth Counting Numbers and Their Name

Numbers and Their Name

Category : 1st Class

* Numbers and Their Name  

 

 

Let us look at the following patterns:    

 

Number Counting
Number Name One Two Three Four Five

 

Let us look at the number counting and their appropriate name as given below:                                                        

 

 

   

 

 Fill the blank box with one of the following options:  

One Two   Four Five Six

(a) Seven                                                            

(b) Three

(c) Eight

(d) Nine  

 

Answer: (b)

Explanation

Three means the number 3 that comes just after four or 4. It is clear from the following diagram:

 

 

Seven means the number 7 which comes just after 6 (six) and just before the number 8 (eight). The following diagram makes it more clear:

 

 

Option (c) is incorrect because eight means the number 8 that comes just after 7 (seven) and just before 9 (nine). The following diagram makes it more clear:

 

 

Option (d) is incorrect because nine means the number 9 that comes after 8 (eight) and just before 10 (ten). The following diagram makes it more clear:

 

 

 

   

 

 Which one of the following options is correctly written?               

(a)                

(b)               

(c)                

(d)  

 

Answer: (c)

Explanation

Option (c) is correct because the number 11 is written as "Eleven" in words and therefore, this is write combination of number and word.

Option (a) is incorrect the correct combination will be as

 

 

Option (b) is incorrect as the correct number and word combination will be

 

 

Option (d) is incorrect as the correct number and word combination will be

 

 

 

*  Reverse Counting  

Reverse counting is back counting or counting backward and the concept of back counting we have discussed in the beginning of this chapter. The reverse counting goes as following-  

 

 

Number reverse counting is one aspect. The another aspect is word reverse counting. Look at the following diagram:  

 

 

Therefore, it is clear that reverse counting goes from greater to smaller. Take another example if we have to count.

 

 

In reverse order then the reverse counting diagram goes as:  

 

 

 

   

 

 Smith does reverse counting of the words (numbers) inside the egg given below. From which word (number) does he start counting?  

(a) Seventeen                                  

(b) Nineteen     

(c) Twenty                                         

(d) Eighteen  

 

Answer: (c)

Expiation  

The counting goes as the following:    

 

 

 

   

 

 Which one of the following box has numbers in the reverse counting order?  

(a)                                       

(b)

(c)                                       

(d)  

 

Answer: (a)      

 

 

   

Counting by any number is same as the table of that number. For example:

  • Counting by  
  • Table of    

 

 

 

  • Forth counting is counting up or counting from smaller to greater number.
  • Back counting or reverse counting is counting down or counting from greater to smaller number.
  • In forth counting smaller numbers come before the greater ones.
  • In back or reverse counting greater numbers come before the smaller ones.
  • In froth counting greater numbers come after smaller ones.
  • In back or reverse counting smaller numbers come after the grater ones.
  • Counting in tens means counting or collection of 10's like 10, 20, 30, 40,  ....... and so on.
  • Counting in twenties means counting or collection of 20's like 20, 40, 60, 80,  .......and so on. Counting in words means counting of 1, 2, 3..... , etc. in the form of one, two, three........ , etc. one, two, three,......... are called number names.

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