**Selina Concise Mathematics Class 6 ICSE Solutions – Numbers in India and International System(With Comparison)**

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**IMPORTANT POINTS**

**Place -Value (Local Value) :**The place – value (Local-value) of a digit depends upon the position, it occupies in the number:

**For example :**

In the number 6453 the place value of 6 is 6 thousand = 6 x 1000 = 6000

the place value of 4 is 4 hundred = 4 x 100 = 400

the place value of 5 is 5 ten = 5 x 10 = 50

the place value of 3 is 3 one = 3 x 1=3**Face -Value (True-Value) :**Each digit in a number has a fixed value, regardless to its position in the number

**For Example :**

In the above number 6453

Face of value of 6 is 6, 4 is 4, 5 is 5 and 3 is 3**An Abstract Number :**Which does not refer to any particular unit e.g., 3, 5, 9.**A Concrete Number :**Which refers to particular unit e.g., 3 boys, 5 girls, 9 rooms etc.

The smallest (least) one digit Number is 1.

The largest (greatest) one digit number is 9.

**EXERCISE 3**

**Question 1.**

Write the following numerals using Indian System words or International system (as required in words) :

(i) 4, 35, 342 = …………..

(ii) 36, 71, 430 = …………..

(iii) 4, 28, 30, 004 = …………..

(iv) 75, 132, 684 = ……………

(v) 815, 906 = …………….

(vi) 5, 420, 700 = ……………..

**Solution:**

(i) 4, 35, 342 = four lakh, thirty five thousand, three hundred forty two

(ii) 36, 71, 430 = Thirty six lakh, seventy one thousand four hundred thirty

(iii) 4, 28, 30, 004 = four crore, twenty eight lakh, thirty thousand four

(iv) 75, 132, 684 = Seventy five million, one hundred thirty two thousand, six hundred eighty four

(v) 815, 906 = Eight hundred fifteen thousand, nine hundred six

(vi) 5, 420, 700 = Five million, four hundred twenty thousand, seven hundred

**Question 2.**

Write the following numbers, placing the commas, according to Indian system :

(i) 835629 = …………

(ii) 35640254 = …………

(iii) 2826040 = ………

**Solution:**

(i) 835629 = 8, 35, 629

(ii) 35640254 = 3, 56, 40, 254

(iii) 2826040 = 28, 26, 041

**Question 3.**

Write the following numbers, by placing the commas, according to International system :

(i) 6509820 = ………..

(ii) 428140584 = …………

(iii) 63560981 = ……….

**Solution:**

(i) 6509820 = 6, 509, 820

(ii) 428140584 = 428, 140, 584

(iii) 63560981 = 63, 560, 981

**Question 4.**

**Fill in the blanks :**

(i) Four lakh sixty seven thousand three hundred six.

= ……………… (In numeral form)

= …………… (In International System)

= ……………. (In International numeration)

(ii) Thirteen lakh forty five.

= ……………. (In numeral form)

= ……………. (In International System)

= ……………. (In International numerals)

**Solution:**

(i) Four lakh sixty seven thousand three hundred six

= 4, 67, 306

= 467, 306

= Four hundred sixty seven thousand three hundred six

(ii) Thirteen lakh forty five

= 13, 00, 45

= 130, 045

= One hundred thirty thousand forty five

**Question 5.**

**Fill in the blanks :**

(i) Six hundred four thousand eight hundred forty seven.

= ……………. (In numeral form)

= ……………. (In Indian System)

= ……………… (Number name in Indian System)

(ii) Two million three hundred ten thousand one hundred four

= …………….. (In numeral form)

= …………… (In Indian System)

= ……………. (In Indian numeration)

= …………….. (In international numerals)

**Solution:**

(i) Six hundred four thousand eight hundred forty seven

= 6, 04, 847

= 604, 847

= Six lakh four thousand eight hundred forty seven

(ii) Two million three hundred ten thousand one hundred four

= 2, 310, 104

= 23, 10, 104

= Twenty three lakh ten thousand one hundred four

= 2, 310, 104

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