Correct Answers: | |
Wrong Answers: | |
Unattempted: |
Question 1
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
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: $44{8/21}$
Question 2
For what value of x would this expression be a perfect square: $6.39 × 6.39 + x × 6.39 + 0.5 × 0.5$?
Question 3
What is x in $0.001/x = 0.1$?
Question 4
If $7.06/0.9$ = 7.844444, then $0.0706/9$ = ?
Question 5
What is x in ${437/0.0437} = {4.37/x}$?
More Chapters | See All...
Ranking Test | Time and Work | Surds and Indices | Paper Folding | Classification Test | Distance and Time | Passwords and Inputs | Volume and Surface Areas | Inequalities | Mirror Images | More...
This Blog Post/Article "Decimal Numbers Quiz Set 008" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Updated on 2020-02-07. Published on: 2016-04-21