Negation of a Number

Q.

The answer of addition is called the $\_\_\_\_$, the answer of subtraction is called the $\_\_\_\_\_$, when minuend $=$ subtrahend, difference $=\_\_\_\_\_$.

Q.

If a + b = 0, then -b is the additive inverse of a.

1. True

2. False

Q.

Write the additive inverse of $-\frac{19}{6}$ and $-\frac{2}{3}$.

Q. The additive inverse of $\frac{-21}{-4}$ is

1. $\frac{4}{21}$
2. $\frac{-21}{4}$
3. $\frac{-4}{21}$
4. $\frac{21}{4}$

Q. What is the value of x if 4x -7 = 3x +5 ?

1. 1

2. 5

3. 12

4. 3

Q.

If $x-3=9$, then $x$ is equal to:

1. 9

2. 6

3. 12

4. 0

Q.

Additive inverse of $\frac{-2}{3}$ is

1. 1

2. 2/3

3. 3/2

4. -3/2

Q. Write additive inverse of $\frac{2}{8}and\frac{-6}{-5}$.

Q.

The additive inverse of the rational number 1/6 is

1. 6

2. -1/6

3. -6

4. 1/6

Q. Write the multiplicative inverse.

(i) $\frac{2}{5}$

(ii) $\frac{-3}{8}$

(iii) $\frac{-17}{39}$

(iv) 7

(v) $-7\frac{1}{3}$

Q. Additive inverse of $\frac{-2}{5}$ subtracted from 6 gives

1. $\frac{-28}{5}$
2. $\frac{32}{5}$
3. $\frac{-32}{5}$
4. $\frac{28}{5}$

Q. The additive inverse of the rational number$-\frac{a}{b}$ is .

1. $\frac{a}{b}$
2. $\frac{b}{a}$
3. $-\frac{b}{a}$

Q. Subtract:
0 from $\frac{-3}{8}$

Q. Find the product of additive inverse and multiplicative inverse of $\frac{x-2}{x^2-4}$

1. $x-2$
2. $x+2$
3. $1$
4. $-1$

Q.

Additive inverse of $\frac{2}{3}$ is ______.

Q.

The additive inverse of the rational number 1/6 is

1. 6

2. 1/6
3. -1/6

4. -6

Q. If $a+b=0$, match the following options appropriately.

1. $a$
2. $b$
3. $\frac{1}{a}$
4. $\frac{1}{b}$

Q.

Find the additive inverse of the number

$3$

Q. Verify whether the given statement is true or false:
$\frac{13}{5}÷\frac{26}{10}=\frac{26}{10}÷\frac{13}{5}$

1. True
2. False

Q.

For rational numbers, zero (0) is a/an ____.

1. additive identity

2. multiplicative identity

3. multiplicative inverse identity for rational numbers

4. None of the above

Q. The value of $x$ in $3+x=15$ is .

1. 18
2. 12
3. -18
4. -12

Q.

$\frac{5}{7}$ + ______ = 1

1. 2/7

2. 4/7

3. 7/5

4. -5/7

Q.

For what value of $x$, $\frac{-12}{x}$ is equal to 3?

1. $-4$

2. $4$

3. $3$

4. $-3$

Q.

The additive identity for rational numbers is 0.

1. False

2. True

Q. Additive inverse of $\frac{-2}{5}$ subtracted from 6 gives

1. $\frac{32}{5}$
2. $\frac{-32}{5}$
3. $\frac{28}{5}$
4. $\frac{-28}{5}$

Q.

-4/7____ 0

1. =

2. >

3. cannot compare

4. <

Q. Is 0 an integer

Q. The rational numbers that are equal to its negative is ________

Q. The value of $x$ in $6+x=4x-15$ is .

1. 4
2. 5
3. 6
4. 7

Q.

A baby weighed $3\frac{2}{5}kg$ at birth two months ago. He gained $2\frac{3}{8}kg$ in two months. How much does the baby weigh now?