Students can download Maths Chapter 1 Numbers Ex 1.1 Questions and Answers, Notes, Samacheer Kalvi 6th Maths Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams.

Tamilnadu Samacheer Kalvi 6th Maths Solutions Term 1 Chapter 1 Numbers Ex 1.1

Question 1.
Fill in the blanks.

  1. The smallest 7 digit number is _______
  2. The largest 8 digit number is _______
  3. The place value of 5 in 7005380 is ________
  4. The expanded form of the number 76,70,905 is _______

Solution:

  1. 10,00,000
  2. 9,99,99,999
  3. 5 × 1000 = 5000
  4. 7 × 10,00,000 + 6 × 1,00,000 + 7 × 10,000 + 0 + 9 × 100 + 0 + 5 × 1
    (or)
    70,00,000 + 6,00,000 + 70,000 + 900 + 5

Samacheer Kalvi 6th Maths Guide Term 1 Chapter 1 Set Language Ex 1.1

Question 2.
Say True or False.

  1. In the Indian System of Numeration, the number 67999037 is written as 6,79,99,037
  2. The successor of a one-digit number is always a one-digit number 9 + 1 = 10
  3. The predecessor of a 3-digit number is always a 3 or 4 digit number 100 – 1 = 99
  4. 88888 = 8 × 10000 + 8 × 100 + 8 × 10 + 8 × 1

Solution:

  1. True
  2. False
  3. False
  4. False

Question 3.
Complete the given order.
Ten crores, crore, ten lakh, ………, ……….., ……….., ………, …….., ……..
Solution:
Ten crores, Crore, Ten lakh, Lakh, Ten Thousand, Thousand, Hundred, Ten, One

Samacheer Kalvi 6th Maths Guide Term 1 Chapter 1 Set Language Ex 1.1

Question 4.
How many ten thousands are there in the smallest 6 digit number?
Solution:
Smallest 6 digit number = 1,00,000
= \(\frac{100000}{10000}\) = 10
1 Lakh = 10 Ten Thousands

Question 5.
Using the digits 5, 2, 0, 7, 3 forms the largest 5 digit number and the smallest 5 digit number.
Solution:
Given digits = 5, 2, 0, 7, 3
Largest 5 digit number – 75320
Smallest 5 digit number – 20357

Question 6.
Observe the commas and write down the place value of 7.
(i) 56,74,56,345
(ii) 567,456,345
Solution:
(i) 70,00,000
(ii) 7,000,000

Samacheer Kalvi 6th Maths Guide Term 1 Chapter 1 Set Language Ex 1.1

Question 7.
Write the following numbers in the International System by using commas.

  1. 347056
  2. 7345671
  3. 634567105
  4. 1234567890

Solution:

  1. 347,056
  2. 7,345,671
  3. 634,567,105
  4. 1,234,567,890

Question 8.
Write the largest six-digit number and put commas in the Indian and the International Systems.
Solution:
Largest 6 digit number = 9,99,999
Indian System: 9,99,999 (Nine Lakh Ninety-Nine Thousand Nine Hundred Ninety-Nine)
International System: 999,999 (Nine Hundred Ninety-Nine Thousand, Nine Hundred Ninety-Nine)

Samacheer Kalvi 6th Maths Guide Term 1 Chapter 1 Set Language Ex 1.1

Question 9.
Write the number names of the following numerals in the Indian System.
(i) 75,32,105
(ii) 9,75,63,453
Solution:
(i) Seventy-five lakh thirty-two thousand one hundred five.
(ii) Nine crore seventy-five lakh sixty-three thousand four hundred fifty-three.

Question 10.
Write the number of names in words using the International System.

  1. 345,678
  2. 8,343,710
  3. 103,456,789

Solution:

  1. Three hundred forty-five thousand six hundred seventy-eight.
  2. Eight million three hundred forty-three thousand seven hundred ten.
  3. One hundred three million four hundred fifty-six thousand seven hundred eighty-nine.

Samacheer Kalvi 6th Maths Guide Term 1 Chapter 1 Set Language Ex 1.1

Question 11.
Write the number name in numerals.

  1. Two crores thirty lakhs fifty-one thousand nine hundred eighty.
  2. Sixty-six million three hundred forty-five thousand twenty-seven.
  3. Seven hundred eighty-nine million, two hundred thirteen thousand four hundred fifty-six.

Solution:

  1. 2,30,51,980
  2. 66,345,027
  3. 789,213,456

Question 12.
Tamil Nadu has about twenty-six thousand three hundred forty-five square kilometres of Forest land. Write the number mentioned in the statement in the Indian System.
Solution:
26,345

Question 13.
The number of employees in the Indian Railways is about 10 lakh. Write this in the International System of numeration.
Solution:
1,000,000 (One Million)

Samacheer Kalvi 6th Maths Guide Term 1 Chapter 1 Set Language Ex 1.1

Objective Type Questions

Question 14.
1 billion is equal to
(a) 100 crore
(b) 100 million
(c) 100 lakh
(d) 10000 lakh
Solution:
(a) 100 crore

Question 15.
The successor of 10 million is
(a) 1000001
(b) 10000001
(c) 9999999
(d) 100001
Solution:
(b) 10000001

Question 16.
The difference between successor and predecessor of 99999 is
(a) 90000
(b) 1
(c) 2
(d) 99001
Solution:
(c) 2

Samacheer Kalvi 6th Maths Guide Term 1 Chapter 1 Set Language Ex 1.1

Question 17.
The expanded form of the number 6,70,905 is
(a) 6 × 10000 + 7 × 1000 + 9 × 100 + 5 × 1
(b) 6 × 10000 + 7 × 1000 + 0 × 100 + 9 × 100 + 0 × 10 + 5 × 1
(c) 6 × 1000000 + 7 × 10000 + 0 × 1000 + 9 × 100 + 0 × 10 + 5 × 1
(d) 6 × 100000 + 7 × 10000 + 0 × 1000 + 9 × 100 + 0 × 10 + 5 × 1
Solution:
(d) 6 × 100000 + 7 × 10000 + 0 × 1000 + 9 × 100 + 0 × 10 + 5 × 1

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