Ncert solutions mathematics class 6 Solutions for Chapter 2 whole numbers

Exercises in Chapter 2 whole numbers Grade 6

Exercise 2.1

Exercise 2.2

Exercise 2.3

Questions in Exercise 2.1

Q1) Write the next three natural numbers after 10999.

Write the next three natural numbers after 10999.

Q2) Write the three whole numbers occurring just before 10001.

Write the three whole numbers occurring just before 10001.

Q3) Which is the smallest whole number?

Which is the smallest whole number?

How many whole numbers are there between 32 and 53?

Q4) How many whole numbers are there between 32 and 53 ?

Q5) Write the successor of :

(a) 2440701 (b) 100199 (c) 1099999 (d) 2345670

Write the successor of:

(a) 2440701

(b) 100199

(d) 2345670

Q6) Write the predecessor of :

Write the predecessor of:

(a) 94

(b) 10000

(d) 7654321

Q7 ) In each of the following pairs of numbers, state which whole number is on the left of

the other number on the number line. Also write them with the appropriate sign (>, <)

between them.

(a) 530, 503 (b) 370, 307 (c) 98765, 56789 (d) 9830415, 10023001

In each of the following pairs of numbers, state which whole number is on the left of the other number on the number line. Also write them with the appropriate sign (>, <) between them.

(a) 530, 503

(b) 370, 307

(d) 9830415, 10023001

Which of the following statements are true (T) and which are false (F)?

The predecessor of a two digit number is never a single digit number.

Q8) Which of the following statements are true (T) and which are false (F) ?

(a) Zero is the smallest natural number. (b) 400 is the predecessor of 399.

(e) All natural numbers are whole numbers.

(f) All whole numbers are natural numbers.

(g) The predecessor of a two digit number is never a single digit number.

(h) 1 is the smallest whole number.

(i) The natural number 1 has no predecessor.

(j) The whole number 1 has no predecessor.

(k) The whole number 13 lies between 11 and 12.

(l) The whole number 0 has no predecessor.

(m) The successor of a two digit number is always a two digit number.

Which of the following statements are true (T) and which are false (F)?

The whole number 0 has no predecessor.

Which of the following statements are true (T) and which are false (F)?

The natural number 1 has no predecessor.

Which of the following statements are true (T) and which are false (F)?

All whole numbers are natural numbers.

Which of the following statements are true (T) and which are false (F)?

600 is the successor of 599.

Which of the following statements are true (T) and which are false (F)?

The whole number 1 has no predecessor.

Which of the following statements are true (T) and which are false (F)?

The whole number 13 lies between 11 and 12.

Which of the following statements are true (T) and which are false (F)?

The successor of a two digit number is always a two digit number.

Which of the following statements are true (T) and which are false (F)?

1 is the smallest whole number.

Which of the following statements are true (T) and which are false (F)?

All natural numbers are whole numbers.

Questions in Exercise 2.2

Find the sum by suitable rearrangement:

(a) 837 + 208 + 363

(b) 1962 + 453 + 1538 + 647

Q1) Find the sum by suitable rearrangement:

(a) 837 + 208 + 363 (b) 1962 + 453 + 1538 + 647

Q2) Find the product by suitable rearrangement:

(a) 2 × 1768 × 50

(b) 4 × 166 × 25

(d) 625 × 279 × 16

(e) 285 × 5 × 60

(f) 125 × 40 × 8 × 25

Find the product by suitable rearrangement:

(a) 2 × 1768 × 50

(b) 4 × 166 × 25

(d) 625 × 279 × 16

(e) 285 × 5 × 60

(f) 125 × 40 × 8 × 25

Find the value of the following:

(a) 297 × 17 + 297 × 3

(b) 54279 × 92 + 8 × 54279

(d) 3845 × 5 × 782 + 769 × 25 × 218

Q3) Find the value of the following:

(a) 297 × 17 + 297 × 3

(b) 54279 × 92 + 8 × 54279

(d) 3845 × 5 × 782 + 769 × 25 × 218

Find the product using suitable properties.

(a) 738 × 103

(b) 854 × 102

(d) 1005 × 168

Q4) Find the product using suitable properties.

(a) 738 × 103 (b) 854 × 102 (c) 258 × 1008 (d) 1005 × 168

Q5) A taxidriver filled his car petrol tank with 40 litres of petrol on Monday. The next day, he filled the tank with 50 litres of petrol. If the petrol costs ₹ 44 per litre, how much did he spend in all on petrol?

A taxidriver filled his car petrol tank with 40 litres of petrol on Monday. The next day, he filled the tank with 50 litres of petrol. If the petrol costs ₹ 44 per litre, how much did he spend in all on petrol?

Q6) A vendor supplies 32 litres of milk to a hotel in the morning and

68 litres of milk in the evening. If the milk costs ` 45 per litre,

how much money is due to the vendor per day?

A vendor supplies 32 litres of milk to a hotel in the morning and 68 litres of milk in the evening. If the milk costs ₹ 45 per litre, how much money is due to the vendor per day?

Match the following:

(i) 425 × 136 = 425 × (6 + 30 + 100) (a) Commutativity under multiplication.

(ii) 2 × 49 × 50 = 2 × 50 × 49 (b) Commutativity under addition.

(iii) 80 + 2005 + 20 = 80 + 20 + 2005 (c) Distributivity of multiplication over addition.

Questions in Exercise 2.3

Q1)

Which of the following will not represent zero:

(a) 1 + 0 (b) 0 × 0 (c) $\frac{0}{2}$ (d) $\frac{10-10}{2}$

Which of the following will not represent zero:

(a) 1 + 0

(b) 0 × 0

(d) (10 – 10) / 2