Find the product, using suitable properties: 7 × 50 - 3

To evaluate: 7 × 50 - 3 Apply distributive property of multiplication over subtraction ∴ 7 × 50 - 3 = ( 7 × 50 ) + ( 7 × - 3 ) ⇒ 7 × 50 - 3 = 350 + ( - 21 ) ⇒ 7 × 50 - 3 = 329 . Hence, 329 is the required answer.

Find the product, using suitable properties: 7 × 50 - 3

To evaluate: 7 × 50 - 3 Apply distributive property of multiplication over subtraction ∴ 7 × 50 - 3 = ( 7 × 50 ) + ( 7 × - 3 ) ⇒ 7 × 50 - 3 = 350 + ( - 21 ) ⇒ 7 × 50 - 3 = 329 . Hence, 329 is the required answer.

Find the product, using suitable properties: 625 × ( - 35 ) + ( - 625 ) × 65

To evaluate: 625 × - 35 + - 625 × 65 Distributive property: a × b + a × c = a b + c ∴ 625 × - 35 + - 625 × 65 = 625 × ( - 35 ) + ( - 65 ) ⇒ 625 × - 35 + - 625 × 65 = 625 × ( - 100 ) ⇒ 625 × - 35 + - 625 × 65 = - 62500 Hence, - 62500 is the required answer.

Find the product, using suitable properties: - 17 × - 28

To evaluate: ( - 17 ) × ( - 28 ) Write - 28 as - 30 + 2 ∴ ( - 17 ) × ( - 28 ) = - 17 × ( - 30 + 2 ) = ( - 17 × - 30 ) + ( - 17 × 2 ) (distributive property) = 510 + ( - 34 ) = 476

Find the product, using suitable properties: ( - 57 ) × - 19 + 57

To evaluate: ( - 57 ) × ( - 19 ) + 57 ( - 57 ) × ( - 19 ) + 57 = ( - 57 ) × ( - 19 ) + 57 × 1 (distributive property) = 57 × ( 19 + 1 ) = 57 × 20 = 1140

E M B I B E

MATHEMATICS A TEXTBOOK FOR CLASS 7>Chapter 1 - Integers>Exercise 1.3>Q 5

EASY

7th Jammu and Kashmir Board

IMPORTANT

Earn 100

Find the product, using suitable properties:
$7 \times (50 - 3)$

Important Questions on Integers

EASY

7th Jammu and Kashmir Board

IMPORTANT

MATHEMATICS A TEXTBOOK FOR CLASS 7>Chapter 1 - Integers>Exercise 1.3>Q 5

Find the product, using suitable properties:

625 \times (- 35) + (- 625) \times 65

EASY

7th Jammu and Kashmir Board

IMPORTANT

MATHEMATICS A TEXTBOOK FOR CLASS 7>Chapter 1 - Integers>Exercise 1.3>Q 5

Find the product, using suitable properties:

(- 17) \times (- 28)

EASY

7th Jammu and Kashmir Board

IMPORTANT

MATHEMATICS A TEXTBOOK FOR CLASS 7>Chapter 1 - Integers>Exercise 1.3>Q 5

Find the product, using suitable properties:

(- 57) \times (- 19) + 57

EASY

7th Jammu and Kashmir Board

IMPORTANT

MATHEMATICS A TEXTBOOK FOR CLASS 7>Chapter 1 - Integers>Exercise 1.3>Q 6

A certain freezing process requires that room temperature be lowered from

40 ° C

at the rate of

5 ° C

every hour. If the room temperature

10

hours after the process begins is

T ° C

, then find the value of

T

?

MEDIUM

7th Jammu and Kashmir Board

IMPORTANT

MATHEMATICS A TEXTBOOK FOR CLASS 7>Chapter 1 - Integers>Exercise 1.3>Q 7

In a class test containing

10

questions,

5

marks are awarded for every correct answer and

(- 2)

marks are awarded for every incorrect answer and

0

for questions not attempted. Arif gets four correct and six incorrect answers. What is his score?

EASY

7th Jammu and Kashmir Board

IMPORTANT

MATHEMATICS A TEXTBOOK FOR CLASS 7>Chapter 1 - Integers>Exercise 1.3>Q 7

In a class test containing

10

questions,

5

marks are awarded for every correct answer and

(- 2)

marks are awarded for every incorrect answer and

0

for questions not attempted. Maria gets five correct answers and five incorrect answers, what is her score?

EASY

7th Jammu and Kashmir Board

IMPORTANT

MATHEMATICS A TEXTBOOK FOR CLASS 7>Chapter 1 - Integers>Exercise 1.3>Q 7

In a class test containing

10

questions,

5

marks are awarded for every correct answer and

(- 2)

marks are awarded for every incorrect answer and

0

for questions not attempted. Sabiya gets two correct and five incorrect answers out of seven questions she attempts. What is her score?

MEDIUM

7th Jammu and Kashmir Board

IMPORTANT

MATHEMATICS A TEXTBOOK FOR CLASS 7>Chapter 1 - Integers>Exercise 1.3>Q 8

A cement company earns a profit of $₹ 8$ per bag of white cement sold and a loss of $₹ 5$ per bag of grey cement sold. The company sells $3,000$ bags of white cement and $5,000$ bags of grey cement in a month. If the total loss occurred after selling both the cement bags is $₹ L$ , then find the value of $L$ ?