Page 18 - ICSE Math 6

Points to remember

• The face value of a digit remains the same irrespective of its place Try These
in the numeral.
• The place value of a digit changes according to its place in the 1. Write a number in which the
place value of 5 is 50.
numeral. 2. Write a number in which the
• The only digit whose face value and place value always remain face value of 4 is 4.
the same is 0. 3. Write a number in which the
face value and place value of
• The digit at ones place of a numeral has the same face value and 8 is the same.
place value.

Example 1: Write the place value of two 7s in the number 7,12,657 and find their sum.
Solution: In 7,12,657, one 7 is at ones place. So, its place value is 7 × 1 = 7.

The other 7 is at lakhs place. So, its place value is 7 × 1,00,000 = 7,00,000.
The sum of the two place values is 7 + 7,00,000 = 7,00,007.

Indian Place Value Chart

Although the Hindu-Arabic system is used all over the world, the expression of a number in words
is different in India from the rest of the world. In Indian system of numeration, commas are used to
mark thousands, lakhs, crores and so on.

Crores Lakhs Thousands Ones

Ten
Ten Crore Crore Ten Lakh Lakh Thousand Hundred Ten One
Thousand

10,00,00,000 1,00,00,000 10,00,000 1,00,000 10,000 1,000 100 10 1

Example 2: Insert commas and write the number names of the following numbers according to the
Indian place value chart.

(a) 43108 (b) 981765 (c) 75698027

Solution: Number Number name

(a) 43,108 Forty-three thousand one hundred eight

(b) 9,81,765 Nine lakh eighty-one thousand seven hundred sixty-five

(c) 7,56,98,027 Seven crore fifty-six lakh ninety-eight thousand twenty-seven

International Place Value Chart Maths Info

In International system of numeration, commas are used to mark We do not use commas while
thousands, millions, billions and so on. writing the number names.

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