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

The base of the decimal number system is ten, meaning, for example, that 123=1.10$^{2}$ + 2.10 + 3.
In the binary system, which has base two, the first five positive integers are 1,10,11,100,101. The numeral 10011 in the binary system would then be written in the decimal system as:

  1. 19

  2. 40

  3. 10011

  4. 11

  5. 7
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

binary(10011)= (1)*2^4 + (0)*2^3 + (0)*2^2 + (1)*2^1 + (1)*2^0

                     =16 + 0 + 0 + 2 + 1
                     =19.

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

The charges in a resort are shown.
Mr. Mohit drove to the resort with his wife and three children on Saturday at $1:30$p.m. They left the resort at $8$ p.m. How much did Mr. Mohit and his family have to pay in all?

Entrance Fee Rs. $40$ per car
Monday to Friday Rs. $15.50$ per passenger
Saturday and Sunday Rs. $22.50$ per passenger
Parking charges Rs. $10.60$ per half hour


  1. Rs. $250.30$
  2. Rs. $300.90$
  3. Rs. $267.80$
  4. Rs. $290.30$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Total number of members in family $\rightarrow$ $5$

Time they spent at the resort $\rightarrow$ $6.5$ hr
Entrance fee $\rightarrow$ $40$
Charge of the members $\rightarrow$  ($22.5$$\times$$5$) $\rightarrow$ $112.5$
Parking charges $\rightarrow$ ($13$$\times$$10.60$) $\rightarrow$ $137.80$ (we took $13$ Since charges are given for half an hour)
Total amount to be paid $\rightarrow$ $40$ + $112.5$ + $137.80$ $\rightarrow$ $290.30$
Hence, Option D is correct answer.