Page 225 - Start Up Mathematics_6

Values and Life Skills

1. Munny, Bunny and Sunny are participating in a race. Munny is 20 m ahead of Sunny and
Bunny is 15 m behind Sunny. If p is the position of Sunny on the racing track, what are the
positions of Munny and Bunny? Why should you not get upset, if you are not the winner in
a competition?
2. Ranjan starts from Delhi at 6:00 a.m. for Dehradun. If the speed of his car is v km/h and he
observes at 11:00 a.m. that he is just 50 km from Dehradun, find the distance between Delhi
and Dehradun in terms of v. What is the importance of using a seat belt, while travelling in
a car?
3. If Rohan spends ` x everyday and saves ` y every week, what is his income in three weeks?
How can you help your parents by saving money?

Some NCERT Textbook Questions

1. Leela is Radha’s younger sister. Leela is 4 years younger than Radha.
Can you write Leela’s age in terms of Radha’s age? Take Radha’s
age to be x years.
2. A cube is a three-dimensional figure as shown in the figure given l
alongside. It has six faces and all of them are identical squares. The
length of an edge of the cube is given by l. Find the formula for the l l
total length of the edges of a cube.
3. Give expression in the following cases.

(a) 11 added to 2 m (b) 11 subtracted from 2 m
(c) 5 times y to which 3 is added (d) 5 times y from which 3 is subtracted

(e) y multiplied by –8
(f) y is multiplied by –8 and then 5 is added to the result
(g) y is multiplied by 5 and the result is subtracted from 16
(h) y multiplied by –5 and the result is added to 10.

4. Answer the following:
(a) Meena, Beena and Leena are climbing the steps to the hill top. Meena is at step s, Beena
is 8 steps ahead and Leena 7 steps behind. Where are Beena and Meena? The total number
of steps to the hill top is 10 less than 4 times what Meena has reached. Express the total
number steps using s.
(b) A bus travels at v km per hour. It is going from Daspur to Beespur. After the bus has
travelled 5 hours, Beespur is still 20 km away. What is the distance from Daspur to
Beespur? Express it using v.

5. Complete the table and find the solution of the equation z/3 = 4 using the table.
z 8 9 10 11 12 13 14 15 16 … … … …

z 2 3 1 … … … … … … … … … …
3 2 3 3 3

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