Tag: decimal numbers

Quizzes (12) Questions (85)

Questions Related to decimal numbers

Multiple choice maths decimal numbers adding and subtracting decimals addition and subtraction of decimals operations on decimals

Sum of $1.8, 16.3$ and $72.985$ is _____ 

  1. $91.85$
  2. $9108.5$
  3. $91.085$
  4. $9.1085$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

For obtaining the sum of decimal numbers with different decimal values we expand the decimal values of all the numbers with respect to the number with the highest decimal value. 


Because the number with the largest decimal places is $72.985$ with $3$ decimal places, we expand all numbers up to $3$ decimal places.

$1.800+16.300+72.985=91.085$

So option C is the correct answer.

Multiple choice maths decimal numbers adding and subtracting decimals addition and subtraction of decimals operations on decimals

Sum of 0.5, 12.56 and 0.003 is

  1. 13.063

  2. 31.063

  3. 12.063

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
We know that to add numbers with different decimal places we expand all the numbers to the same decimal places by expanding zeroes.

So, the sum of 0.5 ,12.56 and 0.003 is

0.500+12.560+0.003 =13.063 

Hence, the answer is 13.063

So, option A is the correct answer.
Multiple choice maths decimal numbers adding and subtracting decimals addition and subtraction of decimals operations on decimals

Sum of $0.3, 0.03$ and $0.003$ is _____ 

  1. $0.999$
  2. $0.393$
  3. $0.636$
  4. $0.333$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To add $3$ decimal numbers of different decimal values we pick the number with the highest decimal value and expand all the other numbers to the same value by adding $0$ after the decimal point.


$0.300+0.030+0.003=0.333$


So option D is the correct answer!