# Decimal Numbers Quiz Set 002

### Question 1

What is x in \$0.006/x = 0.1\$?

A

0.06.

B

0.6.

C

6.0.

D

0.006.

Soln.
Ans: a

The expression becomes \$x = {6/1000} × {10}\$ = 0.06.

### Question 2

What is \${(-27) × 9.6 - 73 × (-3.6)}/9.6\$?

A

\${3/8}\$.

B

\${1/8}\$.

C

\${5/8}\$.

D

\${7/8}\$.

Soln.
Ans: a

Observe that all fractional numbers are having one digit to the right of the dot. So we can cancel all the dots and get a plain expression: \${(-27) × 96 - 73 × (-36)}/96\$. We can now simpilfy the minus signs to get \${(73 × 36) - (27 × 96)}/96\$ which equals \${3/8}\$

### Question 3

What is \$81{46/100000}\$?

A

81.00046.

B

81.0046.

C

81.046.

D

81.000046.

Soln.
Ans: a

The given expression can be written as \${81 × 100000 + 46}/100000\$ which is same as \$8100046/100000\$ which gives 81.00046

### Question 4

If \$5.57/0.4\$ = 13.925, then \$0.0557/4\$ = ?

A

0.013925.

B

0.13925.

C

0.0013925.

D

1.3925.

Soln.
Ans: a

Numerator is divided by 100, and denominator multiplied by 10, so the answer should get divided by 1000.

### Question 5

What is z in \$6.599 + 0.3 - z = 0.04\$?

A

6.859.

B

0.4.

C

4.0.

D

8.659.

Soln.
Ans: a

z = (0.3 + 6.599) - 0.04 = 6.859. 