Subtraction of Rational Numbers

Q. What should be added to $\frac{-7}{8}$ to get $\frac{4}{9}$?

1. $\frac{-95}{72}$
2. $\frac{-72}{95}$
3. $\frac{72}{95}$
4. $\frac{95}{72}$

Q.

What number must be subtracted from
$\frac{1}{4}toget\frac{1}{2}?$

1. $\frac{1}{2}$

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

3. 1

4. -1

Q. What should be subtracted from $\frac{-2}{3}$ to get $\frac{5}{6}$?

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

Q.

The sum of 2 rational numbers is $-5$. If one of them is $\frac{5}{2}$ find the other.

1. $\frac{-7}{2}$

2. $\frac{-15}{2}$

3. -7.5

4. - 3.5

Q.

What should be subtracted from $\frac{-3}{5}$ to get 1?

1. $-\frac{8}{5}$

2. $-\frac{2}{5}$

3. $-\frac{7}{5}$

4. $-\frac{6}{5}$

Q.

Subtract $\frac{7}{4}$ from $\frac{12}{7}$.

1. = $\frac{1}{28}$

2. = $\frac{-1}{28}$

3. = $\frac{-1}{14}$

4. = $\frac{-1}{7}$

Q.

There were 7 friends in a birthday party. If 3 friends ate $\frac{5}{8}$ of the cake, 2 others ate $\frac{1}{8}$ of the cake, then what fraction of the cake was left over for the remaining 2 friends?

1. $\frac{2}{8}$

2. $\frac{2}{4}$

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

4. $\frac{3}{8}$

Q.

-3 - 5/2 = ?

1. 5.5

2. 5.05

3. -5.5

4. -1/2

Q.

If we subtract $\frac{1}{2}$ from a number and multiply the result by $\frac{1}{2}$, we get $\frac{3}{8}$. What is the number?

1. 2

2. 1

3. 1.25

4. 1.5

Q.

On subtracting $\frac{-3}{4}$ from $\frac{-5}{6}$ we get :

1. $\frac{1}{12}$

2. $\frac{-1}{12}$

3. $\frac{2}{3}$

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