Number System

Q1: Fill in the blanks with > or < :

i. 4,80,798 _____ 4,81,612

Compare digit-by-digit:
👉 4,80,798 vs 4,81,612
Since 80798 < 81612
Answer: <

ii. 5,43,611 _____ 5,43,584

Compare digit-by-digit:
👉 Units place: 1 > 4 ⇒ So,
Answer: >

iii. 2,37,928 _____ 68,946

👉 2,37,928 has 6 digits, 68,946 has 5 digits
So clearly:
Answer: >

Q2: Fill in the blanks:

i. 839 rounded to nearest hundred is _______

Check tens digit: 3 (less than 5) → Round down
👉 839 → 800

ii. 83,867 rounded to nearest thousand is _______

Check hundreds digit: 8 (greater than 5) → Round up
👉 83,867 → 84,000

iii. (368 + 143) to nearest ten is _______

Add first:
👉 368 + 143 = 511
Now round 511 to nearest ten: unit digit = 1 → Round down
👉 511 → 510

Q3: Write true (T) or false (F)

i. 0 is the smallest counting number.

Counting starts from 1
Answer: False (F)

ii. The 8th place in the Indian place value chart is called Ten Lakh.

Indian Place Value System: crore (7th), ten crore (8th)
Answer: False (F)

iii. 10 lakhs make a million.

👉 10,00,000 = 1 million (True)
Answer: True (T)

iv. The predecessor of the smallest 7-digit number is the largest 6-digit number.

👉 Smallest 7-digit = 10,00,000
👉 Predecessor = 9,99,999 = largest 6-digit
Answer: True (T)

v. 10 millions make a crore.

1 crore = 10 million (True)
Answer: True (T)

vi. 13,564,030 in International system is written as thirteen million five hundred sixty four thousand thirty.

Correct! Split as:
👉 13 million
👉 564 thousand
👉 030 = thirty
Answer: True (T)