Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

What is ${4.91^3 - 0.40^3}/{4.91^2 + 1.964 + 0.40^2}$?

### Question 2

For what value of x would this expression be a perfect square: $8.88 × 8.88 + x × 8.88 + 0.2 × 0.2$?

### Question 3

What is ${48 × 6.7 - 67 × 8.5}/7.3$?

**A**

$-33{70/73}$.

**B**

$+33{70/73}$.

**C**

$-33{23/73}$.

**D**

$+33{23/73}$.

**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: ${48 × 67 - 67 × 85}/73$ which equals ${-2479/73}$, which is same as: $-33{70/73}$

### Question 4

What is $0.15966/0.02$?

### Question 5

What is ${31 × 8.8 - 27 × 3.2}/4.2$?

**A**

$44{8/21}$.

**B**

$44{5/21}$.

**C**

$44{1/21}$.

**D**

$44{11/21}$.

**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: ${31 × 88 - 27 × 32}/42$ which equals ${932/21}$, which is same as: $44{8/21}$

### More Chapters | See All...

Time and Work | Probability | Ratio and Proportion | Areas | Paper Cutting | Image Series | Surds and Indices | Problems on Numbers | Basic Simplification | Missing Numbers | More...

This Blog Post/Article "Decimal Numbers Quiz Set 017" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2017-04-07.