Page 19 - ICSE Math 6

Billions Millions Thousands Ones

Hundred Billion Ten Billion Billion Hundred Million Ten Million Million Hundred Thousand Ten Thousand Thousand Hundred Ten One

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

Example 3: Insert commas and write the number names of the following numbers according to the
International place value chart.
(a) 43108 (b) 981765 (c) 75698027

Solution: Number Number name

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

(b) 981,765 Nine hundred eighty-one thousand seven hundred sixty-five

(c) 75,698,027 Seventy-five million six hundred ninety-eight thousand twenty-seven

Expanded Form of a Number
Consider the numbers 95,021, 4,75,320 and 5,67,53,412. On the basis of the place values of the
digits, we can expand them as follows:
(a) 95,021 = 9 × 10,000 + 5 × 1,000 + 0 × 100 + 2 × 10 + 1 × 1

(b) 4,75,320 = 4 × 1,00,000 + 7 × 10,000 + 5 × 1,000 + 3 × 100 + 2 × 10 + 0 × 1
(c) 5,67,53,412 = 5 × 1,00,00,000 = 6 × 10,00,000 + 7 × 1,00,000 + 5 × 10,000 + 3 × 1,000 + 4 × 100 +
1 × 10 + 2 × 1

Try These

1. Write the expanded form of 2,45,678.
2. Write the expanded form of sixty-three thousand eight.
3. Write the number name of the number whose expanded form is
7 × 1,00,000 + 6 × 10,000 + 0 × 1,000 + 3 × 100 + 0 × 10 + 0 × 1.

Comparison of Numbers

Out of any two different given numbers, one is always bigger than the other. To check which number
is bigger, follow the given rules.
Rule 1: The number with more digits is always bigger.
Rule 2: If both the numbers have the same number of digits, then start comparing the digits from the
leftmost side. The number with a larger digit at the corresponding place is bigger.

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