Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

Which is the smallest?

**A**

$0.3^3$.

**B**

$1/0.3$.

**C**

$0.3$.

**D**

$0.3^2$.

**Soln.**

**Ans: a**

We know that if a number is less than 1, then it becomes smaller and smaller as it is raised to higher and higher positive powers. Now, $1/0.3$ is same as $0.3^{-1}$. The three powers of 0.3 given to us are -1, 1, 2 and 3. Out of these 3 is the most positive, so, $0.3^3$ is the smallest.

### Question 2

What is ${88 × 6.6 - 68 × 6.3}/1.3$?

**A**

$117{3/13}$.

**B**

$117{1/13}$.

**C**

$117{5/13}$.

**D**

$117{7/13}$.

**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: ${88 × 66 - 68 × 63}/13$ which equals ${1524/13}$, which is same as: $117{3/13}$

### Question 3

For what value of x would this expression be a perfect square: $9.74 × 9.74 + x × 9.74 + 0.3 × 0.3$?

### Question 4

What is x in $0.008/x = 10$?

### Question 5

What is 0.0027 × 0.04?

This Blog Post/Article "Decimal Numbers Quiz Set 016" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2020-01-14.