Role of Zero and One

Q.

The product of a number and its multiplicative inverse is$:$

Q.

What is the multiplicative inverse of $\frac{0}{1}$?

Q.

The product of a rational number and its reciprocal is

Q.

The multiplicative inverse of $-\frac{3}{5}$ is $\frac{5}{3}$ .State whether the statement is true (T) or false (F).

1. True
2. False

Q.

What is the multiplicative inverse of $6$?

Q. Question 127
The product of two rational numbers is $\frac{-14}{27}$. If one of the numbers be $\frac{7}{9}$, find the other.

Q.

Find the multiplicative inverse of $-13$.

Q. What is the additive identity of 19?

1. $\frac{1}{19}$
2. 1
3. 0
4. 19

Q. The rational numbers whose absolute value is $\frac{4}{3}$, is

1. $\frac{8}{6}$
2. $\frac{16}{9}$
3. $1$
4. $-1$

Q.

The product of a number and its reciprocal is__________

Q.

Question 13
A rational number is such that when you multiply it by $\frac{5}{2}$ and add $\frac{2}{3}$ to the product, you get $-\frac{7}{12}$. What is the number?

Q. Question 130
The product of two rational numbers is - 7. If one of the number is - 5, find the other?

Q.

Subtract:

Q. For every non-zero rational number $\frac{a}{b}$ there exists a rational $\frac{c}{d}$ such that $\frac{a}{b}\times \frac{c}{d}=1$, then the rational number $\frac{c}{d}$ is known as

1. Additive identity
2. Multiplicative identity
3. Additive inverse
4. Multiplicative inverse

Q. Name the property involved in $7a+(-7a)=0.$

1. Additive Inverse
2. Multiplicative Identity
3. Multiplicative Inverse
4. Additive Identity

Q.

Which of the rational numbers given in the options is/are equivalent to $\frac{2}{3}$​

1. 8/21

2. 8/12

3. 8/15

4. 8/20

Q.

After reading $\frac{4}{9}th$ of a book, 30 pages are left. How many pages are there in the book?

1. 54

2. 36

3. 24

4. 60

Q. Question 124(v)
Name the property used in each of the following:
$\frac{3}{8}\times 1=1\times \frac{3}{8}=\frac{3}{8}$

Q. Find a number, which when added to $\frac{1}{3}$ gives the same number $\frac{1}{3}$.

1. 1
2. -1
3. 2
4. 0

Q. What is the multiplicative identity of $\frac{2}{3}$?

1. $\frac{2}{3}$
2. 1
3. $\frac{3}{2}$
4. $\frac{-2}{3}$
   

Q. What is the multiplicative identity for a number x?

1. 1
2. 1/x
3. 0
4. -x

Q. What is the additive identity for a number x?

1. -x
2. 1
3. 0
4. x

Q. Name the property involved in the given operation.
2/3 + 0 = 2/3 = 0 + 2/3

1. Additive Identity
2. Associative Property
3. Closure Property
4. Multiplicative Identity

Q.

The sum of two rational numbers is $\frac{13}{24}$ . If one of the number is $\frac{3}{4}$, then find the other number ?

1. $\frac{5}{24}$

2. $\frac{31}{24}$

3. $\frac{-5}{24}$

4. $\frac{20}{24}$

Q. What is the additive identity of 19?

1. 1
2. 0
3. 19
4. $\frac{1}{19}$

Q. What is the multiplicative inverse of 5/7?

1. -5/7
2. 1
3. -7/5
4. 7/5