Write the number of significant digits in:

Write the number of significant digits in:

Write the number of significant digits in:

Write the number of significant digits in $23.4$

Divide $7$  by $11$ and express the result in two significant digits.

Write the number of significant digits in:

Write the number of significant digits in:

Write the number of significant digits in:

For rational numbers, $x$ and $y,$ if $x > y,$ then which of the following is always a positive rational number?

$0.\overline{5}$ in the form of $\frac{p}{q}$ is :

If $x$ and $y$ are positive real number, then which of the following is correct?

Express $\displaystyle 9\frac{7}{20}$ as a decimal.

In expressing a length $81.472 \ km$ as nearly as possible with three significant digits, the percent error is

If $a, b, c$ are distinct $+ve$ real numbers and ${ a }^{ 2 }+{ b }^{ 2 }+{ c }^{ 2 }=1$ then $ab + bc + ca$ is 

If the decimal o.d25d25d25 ................ is expressible in the form n/27, then d+n must be

Express $ \dfrac {5}{13} $ correct to $3$ significant figures.

A $3$ digit id a $3$ digit number (not starting with zero) which reads the same backwards as forwards. For example $171$. The sum of all even $3$ digit palindromes, is 

The number of significant digits in the measurement of the side of a square whose computed area is $1.1025$ square inches to the nearest tenthousandth of a square cm is

Which of the following statements is incorrect regarding significant figures?

Divide $0.3297$ by $0.07$, correct to $2$ significant digits.

In the decimal, $2.4d7$, $d$ represents a digit from 0 to 9. If the value of the decimal rounded to the nearest tenth, is less than $2.5$, what are the possible values of $d$?

$\displaystyle 6.743\times 100$ is equal to _____ 

Calculate the value of the following expression by appropriate rounding off of the numbers:
$\displaystyle 0.43\times 0.87=$

On rounding off the decimal part of $32.4$ to the nearest one, we get

Round each of the following decimals to the nearest one?

While rounding off, if the digit to be dropped is less than $5$, then the preceding digit:

Sohan wishes to order salt for himself, but the salt is only sold in $30$-pound bags. He currently has $75$ pounds of salt, and he needs to have a minimum of $200$ pounds. Determine the inequality which shows the possible values for the number of bags, b, that Macro needs to order in order to meet his minimum requirement.

66.7 can be approximated to

Choose the correct alternative.
If $\bar {d}=-20.83,\bar {x}=254.17$, then $A=?$

List T consists of 30 positive decimals, none of which is an integer, and the sum of the 30 decimals is S.The estimated sum of the 30 decimals, E, is defined as follows. Each decimal in T whose tenths digit is even is rounded up to the nearest integer, and each decimal in T whose tenths digit is odd is rounded down to the nearest integer; E is the sum of the resulting integers. If $\displaystyle \frac { 1 }{ 3 } $ of the decimals in T have a tenths digit that is even, which of the following is a possible value of E- S ? 
I. -16
II. 6
III.10

Find the value to three places of decimal of  the following. It is given that $\sqrt{2}=1.414, \sqrt{3} = 1.732, \sqrt{5} = 2.236$ and $\sqrt{10}=3.162.$ 

What is $4,563,021 \div 10^5$, rounded to the nearest whole number?

Round off each of the following as required.

The correct expansion of $6.\overline {46}$ in the fractional form is :

Multiply $4.28$ and $0.67.$ Round off the product obtained correct to three decimal places