Exercise 1.1:
Write the smallest 4-digit number.
Answer: The smallest 4-digit number is 1000.
Write the greatest 3-digit number.
Answer: The greatest 3-digit number is 999.
Write the Roman numeral for the given number: 498.
Answer: CDXCVIII
Write the Hindu-Arabic numeral for the given Roman numeral: DCCCXLVII.
Answer: 847
Exercise 1.2:
Write the predecessor and successor of:
a) 435
Answer: Predecessor: 434, Successor: 436
b) 1099
Answer: Predecessor: 1098, Successor: 1100
c) 4907
Answer: Predecessor: 4906, Successor: 4908
Write the number name of:
a) 8042
Answer: Eight thousand forty-two
b) 1205
Answer: One thousand two hundred five
c) 5001
Answer: Five thousand one
Write the face value and place value of the underlined digit in the following numbers:
a) 6547 (5)
Answer: Face value: 5, Place value: 500
b) 8905 (9)
Answer: Face value: 9, Place value: 9000
c) 7032 (3)
Answer: Face value: 3, Place value: 30
Insert commas in the correct places and write the numerals:
a) Seventy-five thousand eight hundred twelve
Answer: 75,812
b) Three lakh ten thousand forty-seven
Answer: 3,10,047
c) Nine lakh thirty-six
Answer: 9,00,936
Write the number names of the following:
a) 6073
Answer: Six thousand seventy-three
b) 20800
Answer: Twenty thousand eight hundred
c) 40205
Answer: Forty thousand two hundred five
Exercise 1.3:
Write the Roman numeral for the given numbers:
a) 49
Answer: XLIX
b) 365
Answer: CCCLXV
c) 999
Answer: CMXCIX
Write the Hindu-Arabic numerals for the given Roman numerals:
a) LXXIV
Answer: 74
b) CCXXXVI
Answer: 236
c) DCCCXC
Answer: 890
Write the predecessor and successor of:
a) 999
Answer: Predecessor: 998, Successor: 1000
b) 1000
Answer: Predecessor: 999, Successor: 1001
c) 1,00,000
Answer: Predecessor: 99,999, Successor: 1,00,001
Write the greatest 3-digit number and the smallest 4-digit number using the digits 2, 5, 7, 9 without repetition.
Answer: Greatest 3-digit number: 975, Smallest 4-digit number: 2579
Write the place value and face value of the digit 7 in the number 8754.
Answer: Place value: 700, Face value: 7
