Class 4 Maths Chapter 4 Thousands Around Us – Step-by-Step NCERT Solutions

Solution:

Let us see how they did it.

How many people came for the community lunch?

Solution:
1032

Fill the blanks with appropriate numbers.

Question 3.
Identify the range of numbers most suitable for the following situations. Share your thoughts.

Solution:
Students should do it by themselves.

Identify things around you that are more than 1000 in number.

Solution:
Students should do it by themselves.

NCERT Textbook Page 47 – Let Us Break Up One-Thousand

a) We are at 900. How much more to make 1000? _________
900 + ____ = 1000

Solution:
100

b) Mark 800. How much more to make 1000? _________
800 + ______ = 1000

Solution:
200

c) Mark 850. How much more to 1000? ________
850 + ____ = 1000

Solution:
1000

d) Mark 760. How much more to 1000? ___________
760 + _____ = 1000

Solution:
1000

e) Mark 400. How much less is 400 than 1000? ___________
1000 – ____ = 400

Solution:
600

f) Complete the addition facts leading to 1000.

Solution:

NCERT Textbook Pages 48-50 – Grouping and Regrouping

Look at the pictures below. Circle as many groups of 10 ones or 10 tens as possible. Write the final number against the following pictures.

Solution:

Circle groups of ten Is, 10s, 100s as ma times as required in each of the following pictures. Fill in the empty boxes.

Solution:

Solution:

Solution:

Solution:

NCERT Textbook Page 50 – Let Us Solve

Identify and write the numbers for each of the following in your notebook. Draw pictures like these, if needed.

(a) 45 Ones

Solution:
45 Ones = 4 Tens + 5 Ones = 45

(b) 39 Ones

Solution:
39 Ones = 3 Tens + 9 Ones = 39

(c) 35 Tens

Solution:
35 Tens = 3 Hundreds + 5 Tens = 350

(d) 86 Tens

Solution:
86 Tens = 8 Hundreds + 6 Tens = 860

(e) 10 Tens and 1 Ones

Solution:
10 Tens and 1 Ones = 1 Hundred + 1 Ones = 101 Similarly,

(f) 15 Tens and 23 Ones

Solution:
15 Tens and 23 Ones = 173

(g) 34 Tens and 12 Ones

Solution:
34 Tens and 12 Ones = 352

(h) 19 Tens and 10 Ones

Solution:
19 Tens and 10 Ones = 200

i) 2 Hundreds, 13 Tens and 7 Ones

Solution:
2 Hundreds, 13 Tens and 7 Ones = 337

NCERT Textbook Pages 52-54 – Numbers Beyond 1000 (One Thousand)

Look at the table below and fill in the blanks.

Solution:

Question 1.
Write the numbers in a sequence—forward and backward as indicated.

Solution:

Solution:

Solution:

Solution:

NCERT Textbook Page 54 – Let Us Think

Question 1.
Ram wrote 7 Thousand 0 Hundreds 2 Tens 4 Ones as 724. Is this correct? Write the correct number.

Solution:
No; The correct number is 7024.

Question 2.
Richa wrote 5 Thousand 6 Hundreds 0 Tens 3 Ones as 563. Is this correct? Write the correct number

Solution:
No; The correct number is 5603.

NCERT Textbook Page 55 – Number Line

Question 1.
Which of these numbers lies between 2226 and 3226? Circle the correct answers.

Solution:

Question 2.
Do as instructed.

(a) 1001 and 1038 are marked on the number line. Try to mark 1043, 1069 and 1084 on the same number line.

Solution:

(b) Mark the following numbers on the number line below.

Solution:

(c) Mark the following numbers on the number line below.

5512, 5548, 5590, 5636, 5673, 5695

5512, 5548, 5590, 5636, 5673, 5695

Solution:

d) Mark the following numbers on the number line below.

8679, 8990, 8923, 8763

Solution:

NCERT Textbook Page 56 – Let Us Play

Use the arrow cards (given at the end of the book) to make different numbers. Take turns giving a number for the grade to make using the arrow cards. Read aloud the number and express them in expanded form and in words.

3452 is made up of the cards 3000, 400, 50 and 2.

The expanded form of 3452 is 3000 + 400 + 50 + 2.

In words, 3452 is three thousand four hundred fifty two.

What cards are used to make 4085? Write it in expanded form and in words.

Solution:
4085 is formed using the cards 4000, 80, and 5.
Its expanded form is (4000 + 80 + 5).

Find Me! Read aloud the numbers and locate them in the grid.

1. The number 3782.
2. Two thousand five hundred and seventy-six.
3. 4-digit number with all digits the same.
4. The smallest 4-digit number in this table.
5. The largest 4-digit number in this table.
6. The number more than 5000 and less than 5200.
7. A number between 5600 and 6300.
8. A 4-digit number whose all digits can be found on a dice.

Solution:

NCERT Textbook Page 57 – Let Us Solve

Question 1.
Use tokens of Is, 10s, 100s, 1000s to identify the numbers and write them in the table.

(а) 6 tens and 22 ones
(b) 4 tens and 12 ones
(c) 3 hundreds, 14 tens and 8 ones
(d) 12 hundreds, 18 tens and 2 ones
(e) 1 thousand, 5 hundreds, 10 tens and 17

Solution:

NCERT Textbook Pages 58-60 Comparing Numbers

Jaspreet and Gulnaz help to keep the record of the number of plates used in the Gurudwara every month. Use the sign < and > to find the month when a larger number of plates were used.

Solution:

Solution:

Let Us Do

Question 1.
Compare the following pairs of numbers using < and >. Make a Th, H, T, O table, if necessary. 

Share your thinking in class.

a) 2190 __ 2910
b) 7087 __ 7088
c) 1009 __ 9001
d) 982 __ 1024

Solution:
(a) 2190 < 2910
(b) 7087 < 7088
(c) 1009 < 9001
(d) 982 < 1024

Question 2.
Order the prices of the following objects from smallest to biggest (increasing order).

Solution:

Solution:
4064 < 4814 < 5114 < 6002 < 7805

Question 4.
Arrange the following mountain ranges in decreasing order (from highest to lowest).

Solution:
8611 < 8586 < 7816 < 7138 < 1930 < 1646 < 1276
K2 < Kangchenjunga < Nanda Devi < Chaukhamba I < Mullayanagiri < Kalsubai < Bailadila Range

Question 5.
Use the signs <, =, > to compare the following.

a) 2 Tens + 4 Thousands + 3 Hundreds __ 2043
b) 2 Tens + 4 Thousands + 3 Hundreds __ 4320
c) 2 Thousands + 9 Hundreds + 9 Tens + 9 Ones __ 3000
d) 15 Ones + 9 Tens + 3 Hundreds __ 1593
e) 5000 + 30 + 4 __ 5034
f) 5000 + 300 + 4 __ 5340

Solution:
(a) 2 Tens + 4 Thousands + 3 Hundreds > 2043
(b) 2 Tens + 4 Thousands + 3 Hundreds = 4320
(e) 2 Thousands + 9 Hundreds + 9 Tens + 9 Ones < 3000
(d) 15 Ones + 9 Tens + 3 Hundreds < 1593
(e) 5000 + 30 + 4 = 5034
(f) 5000 + 30 + 4 < 5340

Question 6.
Fill the blanks with digits 0-9 such that the numbers meet the condition.

a) 7__ __3 < 768__
b) 853__ < 8__3__
c) __2__1 < 5__2__

Solution:
(a) 7283 < 7689
(b) 8530 < 8637
(c) 4231 < 5125

NCERT Textbook Page 61 – Challenge

There are 99 numbers strictly between 700 and 800 excluding 700 and 800. How many numbers are there strictly between 7000 and 8000?

Circle the correct answer:

900 999 1000

Solution:

NCERT Textbook Page 61 – Let Us Explore

Question 1.
Make as many four-digit numbers as possible using the digits 2, 3, 4, 7 without repetition. There are 24 different numbers possible. Find as many as you can and arrange the numbers in decreasing order in your notebook.

Solution:
2347, 2374, 2437, 2473, 2734, 2743, 3247, 3274, 3427, 3472, 3724, 3742, 4237, 4273, 4327, 4372, 4723, 4732, 7234, 7243, 7324, 7342, 7423, 7432

Question 2.
Compare with your friends to find what other numbers they have made. See if all of you together can come up with all the 24 numbers. How do you know that you have all possible such 

numbers?

Solution:
Students should do it by themselves.