Introduction: Decimal

Q.

Question 3 (i)
Express 5 cm in meter and kilometer

Q.

Every floor of a $104$-storey skyscraper is $4m$ high. If a balloon rises $3m$ every second , how long will it take to rise from the ${36}^{th}$ floor to the ${96}^{th}$ floor?

Q.

Convert the given fraction into decimals

$\frac{5}{8}$

Q.

Question 2 (ii)

Express as rupees using decimals:
7 rupees 7 paise

Q.

Question 2 (iii)

Express as rupees using decimals:
77 rupees 77 paise

Q.

Which of the following numbers lie between $\frac{3}{4}$ and $\frac{7}{4}$?

1. 5.0

2. 2.5

3. 1.25

4. 3.0

Q.

Question 2 (iv)

Express as rupees using decimals:
50 paise

Q. Question 5 (i)
Write the following decimal numbers in the expanded form:
20.03

Q.

You have 100 rupee and you have to buy 100 utensils.

The rate of utensils are:

25 paise per utensil

I rupee per utensil

5 rupee per utensil

Note: You have to buy all types of utensils and the number must be 100.

Q.

Convert 15.75 rupees into paise. [Enter a numerical value] ___

Q.

Round up the $34.216$ up to three significant figures

Q.

1/4 litre of milk costs rs.seven and a half. Find the cost of four and half litres of milk. With all the steps.

Q.

Arrange in ascending order.. ..

5/12 , 3/4 , 7/8, 13/24

Q. Question 6 (v)
Write the place value of 2 in the following decimal numbers:
63.352

Q. Question 6 (i)
Write the place value of 2 in the following decimal numbers:
2.56

Q. Question 6 (iii)
Write the place value of 2 in the following decimal numbers:
10.25

Q.

What is decimal notation?

Q.

Mangoes are being sold at 155/4 Rs per kg. What is the cost of 16/5 kg of mangoes ?

Q.

Question 3 (ii)
Express 35 mm in cm, m and km

Q.

Express the following in rupees using decimals.

$25$ paise

Q.

Which is greater?

(i) 0.5 or 0.05 (ii) 0.7 or 0.5 (iii) 7 or 0.7

(iv) 1.37 or 1.49 (v) 2.03 or 2.30 (vi) 0.8 or 0.88

Q.

Convert the following fractions into decimals and find the sum of these decimals that rounded up to $2$ decimal places.

$\frac{1}{2}$, $\frac{5}{2}$, $\frac{4}{9}$, $\frac{5}{20}$, $\frac{3}{10}$, $\frac{7}{100}$, $\frac{100}{2}$, $\frac{100000}{10000000}$, $\frac{12}{48}$, $\frac{9}{99}$, $\frac{5}{25}$
Ans: ___

Q.

Write the following decimals in the place value table. $2.08$.

Q.

Approximate $\frac{1}{3}$ correct to two decimals.

1. 0.36

2. 0.34

3. 0.33

4. 0.32

Q.

Ascending order of following numbers
3/6, 2/8, and 4/9 is

1. 2/8, 4/9, 3/6

2. 2/8, 3/6, 4/9

3. 3/6, 4/9, 2/8

4. 4/9, 3/6, 2/8

Q.

Express the following in expanded form:

$643.643$

Q.

Convert the decimal to fraction $1.75$

Q.

Which of the following decimals are equal?

1. 01.0101, 10.1001

2. 10.101010, 10.100100

3. 0.1010, 0.1010000

4. 11.011011, 11.0101

Q.

Write the following decimals as fractions. Reduce the fraction to lowest form.

$13.7$

Q.

Arrange the following in descending order:

(i) (ii)