Grade 7 : Mathematics (Ganita Prakash) - 10. Integers (Set 1) | Concept of Maths

Question 1

A submarine is at a depth of 450 meters below sea level. If it ascends 150 meters, what is its new position relative to sea level?

Accepted Answer

C) -300 meters

Answer

A) -600 meters

Answer

B) 300 meters

Answer

D) -150 meters

Question 2

What is the additive inverse of the sum of $(-12)$ and $(-8)$?

Accepted Answer

A) 20

Answer

B) -20

Answer

C) 4

Answer

D) -4

Question 3

In a quiz, +3 marks are given for every correct answer and -1 mark for every incorrect answer. If Rohan answered 10 questions correctly and 5 questions incorrectly, what is his total score?

Accepted Answer

B) 25

Answer

A) 30

Answer

C) 35

Answer

D) 15

Question 4

Which of the following properties is shown by $a imes (b + c) = a imes b + a imes c$?

Accepted Answer

D) Distributive Property

Answer

A) Commutative Property

Answer

B) Associative Property

Answer

C) Closure Property

Question 5

What is the value of $(-1) imes (-1) imes (-1) imes (-1) imes (-1)$?

Accepted Answer

C) -1

Answer

A) 5

Answer

B) 1

Answer

D) -5

Question 6

The temperature at noon was $10^\circ ext{C}$ above zero. If it decreases at the rate of $2^\circ ext{C}$ per hour until midnight, at what time would the temperature be $-2^\circ ext{C}$?

Accepted Answer

B) 6 PM

Answer

A) 4 PM

Answer

C) 8 PM

Answer

D) 10 PM

Question 7

Which integer multiplied by $(-1)$ gives the product 47?

Accepted Answer

A) -47

Answer

B) 47

Answer

C) 0

Answer

D) -1

Question 8

What is the predecessor of the integer -15?

Accepted Answer

D) -16

Answer

A) -14

Answer

B) 16

Answer

C) 14

Question 9

If the product of two integers is -150 and one of them is 10, what is the other integer?

Accepted Answer

B) -15

Answer

A) 15

Answer

C) 140

Answer

D) -160

Question 10

Which of the following is true?

Accepted Answer

C) $-10 < -2$

Answer

A) $-5 > -3$

Answer

B) $0 < -1$

Answer

D) $-8 = 8$