# Aptitude - Decimals & Fractions Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Decimals and Fractions. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz. Q 1 - The fraction 36(42/1000) in the decimal form is

A - 36.42

B - 36.042

C - 364.2

D - 36.0042

### Explanation

```36(42/1000)  = 36 + 0.042
= 36.042
```

Q 2 - (0.1x0.2x0.3x0.4)/4!=?

A - 10-2

B - 10-3

C - 10-4

D - 10-5

### Explanation

``` (0.1x0.2x0.3x0.4)/4!=(1x2x3x4x10(-4))/(4*3*2*1)=10(-4)
```

Q 3 - √(0.169/0.064)=?

A - 13/8

B - 19/8

C - 13/5

D - 1

### Explanation

```√(0.169/0.064)=√((169/1000)/(64/1000))=√(169/64)=13/8
```

Q 4 - If 1/6th part of a number is 150 more than 1/9th part of that number, then the number is?

A - 2100

B - 2400

C - 2500

D - 2700

### Explanation

``` Let the number be X.
Thus 1/6X- 1/9X=150
=>(3X-2X)/18=150
=>X=2700
```

Q 5 - 3 x 0.3 x 0.03 x 0.003 x 30 = ?

A - 0.0000243

B - 0.000243

C - 0.00243

D - 0.0243

### Explanation

```
Number of decimal places in the product = 1 + 2 + 3 = 6.
3 x 3 x 3 x 3 = 2430
∴ 3 x 0.3 x 0.03 x 0.003 x 30 = .00243
```

Q 6 - 80.28 x 40.08 = ?

A - 80.36

B - 40.36

C - 2

D - 1

### Explanation

``` Given expression is (23)0.28 x (22)0.08
= 2(3 x 0.28) x 2(2 x 0.08)
= 2(0.84 + 0.16)
= 21
= 2
```

Q 7 - (6.5 x 4.7 + 6.5 x 5.3) / (1.3 x 7.9 - 1.3 x 6.9) = ?

A - 3.9

B - 39

C - 34.45

D - 50

### Explanation

```
(6.5 x 4.7 + 6.5 x 5.3) / (1.3 x 7.9 - 1.3 x 6.9) = {6.5 x (4.7 + 5.3)} / {1.3 x (7.9 - 1.3)} = (6.5 x 10) / (1.3 x 1) = 50.
```

Q 8 - (0.25 x 0.25 - 0.24 x 0.24) / 0.49 = ?

A - 0.0006

B - 0.49

C - 0.01

D - 0.1

### Explanation

```
As a2 - b2 = (a+b)(a-b)
∴ (0.25 x 0.25 - 0.24 x 0.24) / 0.49 = (0.25 + 0.24)(0.25 - 0.24) / 0.49
= (0.49 x 0.01) / 0.49 = 0.01
```

Q 9 - 25.7322 - 15.7322 = ?

A - 4.1464

B - 41.464

C - 414.64

D - 4146.4

### Explanation

```
25.7322  - 15.7322 = (25.732 + 15.732)(25.732 - 15.732) = 41.464 x 10 = 414.64
```

Q 10 - How many pieces of 12.6 cm can be cut from a log of 857 cm?

A - 58

B - 62

C - 64

D - 68

```