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Important Questions: Integers


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20 Questions MCQ Test Mathematics (Maths) Class 7 | Important Questions: Integers

Important Questions: Integers for Class 7 2022 is part of Mathematics (Maths) Class 7 preparation. The Important Questions: Integers questions and answers have been prepared according to the Class 7 exam syllabus.The Important Questions: Integers MCQs are made for Class 7 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Important Questions: Integers below.
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Important Questions: Integers - Question 1

What do we call the set of negative numbers and whole numbers?

Detailed Solution for Important Questions: Integers - Question 1

The set of negative numbers and whole numbers is called integers. 

Z={,....−2,−1,,0,1,2,.....}

Important Questions: Integers - Question 2

Which of the following is the smallest positive integer?

Detailed Solution for Important Questions: Integers - Question 2

1 is the smallest positive integer.

Important Questions: Integers - Question 3

Where are the negative numbers located on a horizontal number line?

Detailed Solution for Important Questions: Integers - Question 3

All the other positive numbers to its right are greater than, the negative numbers are located on the left side of 0. 

Important Questions: Integers - Question 4

What is the opposite of earning Rs. 100?

Detailed Solution for Important Questions: Integers - Question 4

The required opposite is spending Rs. 100.

Important Questions: Integers - Question 5

How is the withdrawal of RS. 200 represented?

Detailed Solution for Important Questions: Integers - Question 5

Withdrawal of Rs. 200 means amount 200 is subtracted from our account. Option B is correct.

Important Questions: Integers - Question 6

Which of the following is true with respect to −28 and −32?

Detailed Solution for Important Questions: Integers - Question 6

Because -32 is on the left of -28 on the number line, so it is smaller.

Important Questions: Integers - Question 7

Where do we place the positive numbers on a vertical number line with respect to 0?

Detailed Solution for Important Questions: Integers - Question 7

Positive number are located above 0 and negative numbers are located below 0 on a vertical number line 

Important Questions: Integers - Question 8

What is the representation of 30 km towards the west?

Detailed Solution for Important Questions: Integers - Question 8

Since west is on the left side, and there are negative integers on the left, so it's -30 kms.

Important Questions: Integers - Question 9

What is the nature of the product of a negative integer by itself, odd number of times?

Detailed Solution for Important Questions: Integers - Question 9

(−1)×(−1)×(−1)........odd times 

= (−1)  which is negative.

Important Questions: Integers - Question 10

What is the nature of the product of a negative number by itself even number of times?

Detailed Solution for Important Questions: Integers - Question 10

(−1)×(−1)×(−1)....even times =1,which is positive.

Important Questions: Integers - Question 11

Calculate (−32)×(−4)×(−3)×0×(−6)

Detailed Solution for Important Questions: Integers - Question 11

(−32)×(−4)×(−3)×0×(−6)=0 as the product of any number and 0 is 0.

Important Questions: Integers - Question 12

If the dividend and the divisor have like signs, what is the sign of the quotient?

Detailed Solution for Important Questions: Integers - Question 12

If dividend and divisor have positive signs then the quotient will be positive. If dividend and divisor have negative signs , then the quotient will be positive because 2 negative signs becomes positive.

Important Questions: Integers - Question 13

If the dividend and divisor have unlike signs, what is the sign of the quotient?

Detailed Solution for Important Questions: Integers - Question 13

If the dividend and divisor have unlike signs then the quotient will be Negative.

Division of Integers is similar to the division of whole numbers (both positive) except the sign of the quotient needs to be determined.

If both the dividend and divisor are positive, the quotient will be positive.
(+16) ÷ (+4) = +4

If both the dividend and divisor are negative, the quotient will be positive.
(-16) ÷ (-4) = +4

If only one of the dividend or divisor is negative, the quotient will be negative.
(+16) ÷ (-4) = -4     or   (-16) ÷ (+4) = -4

In other words, if the signs are the same the quotient will be positive, if they are different, the quotient will be negative
Hence Option B

Important Questions: Integers - Question 14

Match the following.

Detailed Solution for Important Questions: Integers - Question 14

(132) / (-12) = -11

(-144) / (+16) = -9

(-32) / (-4) = 8

(196) / (4) = 49

So option C is correct

Important Questions: Integers - Question 15

With respect to which of the following operations is closure property satisfied by the set of integers?

Detailed Solution for Important Questions: Integers - Question 15

The closure property states that when you perform an operation on any two numbers in a set, the result of the computation is another number in the same set .Since division can result in changing an integer in decimals. So its closed in addition, subtraction and multplication.

Important Questions: Integers - Question 16

What is the additive identity element for the set of integers?

Detailed Solution for Important Questions: Integers - Question 16

0 is identity element with respect to addition of integers, e.g.,(−5)+0 = +0+(−5) = (−5)

Important Questions: Integers - Question 17

Which of the following is the multiplicative identity in the set of integers?

Detailed Solution for Important Questions: Integers - Question 17

1 is the identity element with respect to multiplication.

Important Questions: Integers - Question 18

What is the value of 124×4−3+118÷2?

Detailed Solution for Important Questions: Integers - Question 18

Use BODMAS rule & simplify:

= 124×4  −3 + 118+2

= 496 − 3 + 59

= 552

Important Questions: Integers - Question 19

Which of the following order is used while evaluating an expression?

Detailed Solution for Important Questions: Integers - Question 19

(),{},[] is the correct order of evaluation of brackets.

Important Questions: Integers - Question 20

If a negative sign precedes a bracket, what happens to the terms inside it?

Detailed Solution for Important Questions: Integers - Question 20

If a negative sign precedes a bracket, the signs of the terms inside the bracket are changed.

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