Multiplication of Decimals

Q.

Convert $5$ paise into rupee.

Q.

What is the meaning of cent in percentage??

Q.

1 kilometre is equal to 1000 metres.

1. True

2. False

Q. Question 2
Find the area of rectangle whose length is 5.7 cm and breadth is 3 cm

Q.

Vidya and Pratap went for a picnic. Their mother gave them a water bottle that contained 5 litres of water. Vidya consumed $\frac{2}{5}$ of the water. Pratap consumed the remaining water.

(i) How much water did Vidya drink?

(ii) What fraction of the total quantity of water did Pratap drink?

Q.

Find: $11.2\times 0.15$

Q.

The product of two numbers is 3.92. If one of them is 1.40, then the other number is ____.

1. 2.8

2. 3.2

3. 2.4

4. 1.44

Q.

If 1 gram of gold costs Rs.175.50, then how much will 15 grams of gold cost?

1. Rs.2632.05

2. Rs.2362.15

3. Rs.2632.50

4. Rs.1266.50

Q. A bag contains 25 kg of rice at ₹ 20.04 per kg and 20 kg of dal at ₹ 15.28 per kg. What is the total cost of 5 such bags?

1. $\text{₹ 4033}$

2. $\text{₹ 4038.36}$

3. $\text{₹ 4040.40}$

4. $\text{₹ 4038.92}$

Q. Question 1 (i)
Find
0.2 $\times$ 6

Q. What is the cost of 27.5 m of cloth at ₹ 53.50 per metre?

Q. Question 5 (v)
Find
0.5 $\times$ 0.05

Q. One kg of rice costs Rs. 42.65. What will be the cost of 18.25 kg of rice?

Q.

Increase

90 by 2%

Q.

Vicky multiplied $84371$ by $31$ instead of multiplying by $13$. How much is the answer more than the correct answer?

Q.

Rohit's friend's house is 2.87 km away from his house. If Rohit has covered a distance of 1500 m, find how much more distance he has to cover to reach his friends's house

1. 1.17 km

2. 1.27 km

3. 1.37 km

4. 1.47 km

Q.

Question 117 (iii)

Life Science Application
A DNA model was built using the scale 2 cm : 0.0000001 mm. If the model of the DNA chain is 17 cm long, what is the length of the actual chain?

Q.

Find:

(i) $1.3\times 10$ (ii) $36.8\times 10$ (iii) $153.7\times 10$

(iv) $168.07\times 10$ (v) $31.1\times 100$ (vi) $156.1\times 100$

(vii) $3.62\times 100$ (viii) $43.07\times 100$ (ix) $0.5\times 10$

(x) $0.08\times 10$ (xi) $0.9\times 100$ (xii) $0.03\times 1000$

Q. Question 3 (iii)
Find
153.7 $\times$ 10

Q.

Find: $0.08\times 10$

Q. Write the following decimals in ascending order:
$5.64,2.54,3.05,0.259$ and $8.32$

Q.

How many kilometres make $600m$?

Q.

Convert the following

$\text{Rs}2.25\text{to Paisa}$

Q. Question 3 (xii)
Find
0.03 $\times$ 1000

Q. If the decimal point of a decimal number is shifted one place to its right, then the resulting number is ___ times the original number.

1. $\frac{1}{10}$
2. 10
3. $\frac{1}{100}$
4. 100

Q.

What is the value of $0.01\times 0.02$ ?

1. 0.002

2. 0.02

3. 0.0002

4. 0.2

Q.

Find:

(i) 0.2 × 6 (ii) 8 × 4.6 (iii) 2.71 × 5

(iv) 20.1 × 4 (v) 0.05 × 7 (vi) 211.02 × 4

(vii) 2 × 0.86

Q.

Exchange the digits 3 and 7 in the given numbers and compare the new numbers with the given numbers :

$7634$

Q. 15.75 rupees in paise is .

1. 1575
2. 1475
3. 325

Q.

Ram bought 5.5 kg of rice at ₹13.5 per kg. What was the total cost of rice?

1. ₹74.25

2. ₹42.96

3. ₹73.96

4. ₹43.69