Fill in the blanks: a) Smallest 7-digit number − 1 = lakh. b) Largest 5-digit number + 1 = lakh. c) 1000 = hundreds = + 1. d) 1,00,000 = thousands = + 1.

a) Smallest 7-digit number $- 1 = \_\_\_\_\_\_$ lakh
The smallest 7-digit number is 1,000,000.
$1,000,000 - 1 = 999,999$.
In the Indian number system, 999,999 is 9 lakh 99 thousand 999.
So, $999,999 = 9$ lakh.
The blank is $\boxed{\text{9}}$.

b) Largest 5-digit number $+ 1 = \_\_\_\_\_\_$ lakh
The largest 5-digit number is 99,999.
$99,999 + 1 = 100,000$.
In the Indian number system, 100,000 is 1 lakh.
The blank is $\boxed{\text{1}}$.

c) $1000 = \_\_\_\_\_\_$ hundreds $= \_\_\_\_\_\_ + 1$
1000 divided by 100 is 10. So, $1000 = 10$ hundreds.
For the second part, $1000 = \_\_\_\_\_\_ + 1$, the number is $1000 - 1 = 999$.
The blanks are $\boxed{\text{10}}$ and $\boxed{\text{999}}$.

d) $1,00,000 = \_\_\_\_\_\_$ thousands $= \_\_\_\_\_\_ + 1$
1,00,000 divided by 1000 is 100. So, $1,00,000 = 100$ thousands.
For the second part, $1,00,000 = \_\_\_\_\_\_ + 1$, the number is $1,00,000 - 1 = 99,999$.
The blanks are $\boxed{\text{100}}$ and $\boxed{\text{99,999}}$.

a) Find the face value of each digit in the number 601872.
The face value of a digit is the digit itself.

• Face value of 6: $\boxed{6}$
• Face value of 0: $\boxed{0}$
• Face value of 1: $\boxed{1}$
• Face value of 8: $\boxed{8}$
• Face value of 7: $\boxed{7}$
• Face value of 2: $\boxed{2}$

b) Find the place value of each digit in the number 259130.
The place value of a digit is the digit multiplied by the value of its position.

• Place value of 0 (ones place): $0 \times 1 = \boxed{0}$
• Place value of 3 (tens place): $3 \times 10 = \boxed{30}$
• Place value of 1 (hundreds place): $1 \times 100 = \boxed{100}$
• Place value of 9 (thousands place): $9 \times 1000 = \boxed{9000}$
• Place value of 5 (ten thousands place): $5 \times 10000 = \boxed{50000}$
• Place value of 2 (lakhs place): $2 \times 100000 = \boxed{200000}$

a) 270895
Commas: $\boxed{2,70,895}$
Number name: Two lakh seventy thousand eight hundred ninety-five

b) 072159
This number is 72159.
Commas: $\boxed{72,159}$
Number name: Seventy-two thousand one hundred fifty-nine

c) 809224
Commas: $\boxed{8,09,224}$
Number name: Eight lakh nine thousand two hundred twenty-four

d) 317601
Commas: $\boxed{3,17,601}$
Number name: Three lakh seventeen thousand six hundred one

e) 9872005
Commas: $\boxed{98,72,005}$
Number name: Ninety-eight lakh seventy-two thousand five

f) 880764
Commas: $\boxed{8,80,764}$
Number name: Eight lakh eighty thousand seven hundred sixty-four

a) Two lakh four thousand and fifty-three
$\boxed{2,04,053}$

b) Six lakh thirty-two thousand five hundred and one
$\boxed{6,32,501}$

c) Two lakh thirty-five thousand and four
$\boxed{2,35,004}$