Secondary School (English Medium) (5 to 8) Class 7 - CBSE Question Bank Solutions for Mathematics

In a public library, the following observations were recorded by the librarian in a particular week:

1. Draw a double bar graph choosing an appropriate scale.
2. On which day, the number of readers in the library was maximum?
3. What is the mean number of magazine readers?

Observe the following data:

1. Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph?
2. Which class has the maximum number of students?
3. In which class, the difference of total students and number of students present is minimum?
4. Find the ratio of number of students present to the total number of students of Class IX.
5. What per cent of Class VI students were absent?

Observe the given data:

1. Draw a bar graph to represent the above given information.
2. On which day of the week was the sales maximum?
3. Find the total sales during the week.
4. Find the ratio of the minimum sale to the maximum sale.
5. Calculate the average sale during the week.
6. On how many days of the week was the sale above the average sales?

Below is a list of 10 tallest buildings in India.

This list ranks buildings in India that stand at least 150 m (492 ft.) tall, based on standard height measurement. This includes spires and architectural details but does not include antenna marks. Following data is given as per the available information till 2009. Since new buildings are always under construction, go on-line to check new taller buildings.

Use the information given in the table about sky scrapers to answer the following questions:

(a) Find the height of each storey of the three tallest buildings and write them in the following table:

(b) The average height of one storey for the buildings given in (a) is ______.

(c) Which city in this list has the largest percentage of skyscrapers? What is the percentage?

(d) What is the range of data?

(e) Find the median of the data.

(f) Draw a bar graph for given data.

The students of Class VII have to choose one club from Music, Dance, Yoga, Dramatics, Fine arts and Electronics clubs. The data given below shows the choices made by girls and boys of the class. Study the table and answer the questions that follow:

1. Draw a double bar graph using appropriate scale to depict the above data.
2. How many students are there in Class VII?
3. Which is the most preferred club by boys?
4. Which is the least preferred club by girls?
5. For which club the difference between boys and girls is the least?
6. For which club is the difference between boys and girls the maximum?

The marks out of 100 obtained by Kunal and Soni in the Half Yearly Examination are given below:

1. Draw a double bar graph by choosing appropriate scale.
2. Calculate the total percentage of marks obtained by Soni.
3. Calculate the total percentage of marks obtained by Kunal.
4. Compare the percentages of marks obtained by Kunal and Soni.
5. In how many subjects did Soni get more marks than Kunal? Which are those subjects?
6. Who got more marks in S. Science and what was the difference of marks?
7. In which subject the difference of marks was maximum and by how much?

The data given below shows the production of motorbikes in a factory for some months of two consecutive years.

Study the table given above and answer the following questions:

1. Draw a double bar graph using appropriate scale to depict the above information and compare them.
2. In which year was the total output the maximum?
3. Find the mean production for the year 2007.
4. For which month was the difference between the production for the two years the maximum?
5. In which month for the year 2008, the production was the maximum?
6. In which month for the year 2007, the production was the least?

The table below compares the population (in hundreds) of 4 towns over two years:

Study the table and answer the following questions:

1. Draw a double bar graph using appropriate scale to depict the above information.
2. In which town was the population growth maximum?
3. In which town was the population growth least?

The table below gives the data of tourists visiting 5 hill stations over two consecutive years. Study the table and answer the questions that follow:

1. Draw a double bar graph to depict the above information using appropriate scale.
2. Which hill station was visited by the maximum number of tourists in 2008?
3. Which hill station was visited by the least number of tourists in 2009?
4. In which hill stations was there increase in number of tourists in the year 2009?

The table below gives the flavours of ice cream liked by children (boys and girls) of a society.

Study the table and answer the following questions:

1. Draw a double bar graph using appropriate scale to represent the above information.
2. Which flavour is liked the most by the boys?
3. How many girls are there in all?
4. How many children like chocolate flavour of ice cream?
5. Find the ratio of children who like strawberry flavour to vanilla flavour of ice cream.

The sum of two numbers is 60 and their difference is 30.

The equation formed is ______.

Sum of two numbers is 81. One is twice the other.

The equation formed is ______.

In a test Abha gets twice the marks as that of Palak. Two times Abha's marks and three times Palak's marks make 280.

The equation formed is ______.

In a test Abha gets twice the marks as that of Palak. Two times Abha's marks and three times Palak's marks make 280.

The solution of the equation is ______.

In a test Abha gets twice the marks as that of Palak. Two times Abha's marks and three times Palak's marks make 280.

Marks obtained by Abha are ______.

The length of a rectangle is two times its breadth. Its perimeter is 60 cm.

1. If the breadth of rectangle is x cm, the length of the rectangle is ______.
2. Perimeter in terms of x is ______.
3. The equation formed is ______.
4. The solution of the equation is ______.

The length of a rectangle is two times its breadth. Its perimeter is 60 cm.

Perimeter in terms of x is ______.

The length of a rectangle is two times its breadth. Its perimeter is 60 cm.

The equation formed is ______.

The length of a rectangle is two times its breadth. Its perimeter is 60 cm.

The solution of the equation is ______.

In a bag there are 5 and 2 rupee coins. If they are equal in number and their worth is ₹ 70, then

The worth of x coins of ₹ 2 each ______.