Question 2 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61cc1a8c78c526e972caefb0.PNG' />
Find the rule which gives the number of matchsticks required to make the above matchstick pattern. Use a variable to write the rule.(Take variable as 'n').
Question 3 :
Radha is drawing a dot Rangoli (a beautiful pattern of lines joining dots) with chalk powder. She has 9 dots in a row. How many dots will her Rangoli have for 10 rows?
Question 6 :
State if the following is an equation. Identify the variable from the equations with a variable. $7 – x = 5$
Question 7 :
State if the following is an equation. Identify the variable from the equations with a variable. $20 – (10 – 5) = 3 \times 5$
Question 8 :
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.
Question 9 :
Identify the variable from the equation 7 = (11×2) + p.
Question 12 :
Identify the variable from the equation 2n + 1 = 11.
Question 13 :
State if the following is an equation. Identify the variable from the equations with a variable. $z + 12 > 24$
Question 14 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61cc1a8d78c526e972caefb5.PNG' />
In the above image, the diameter of a circle is a line which joins two points on the circle and also passes through the centre of the circle. (AB is a diameter of the circle; C is its centre). Express the diameter of the circle 'd' in terms of its radius 'r'.
Question 16 :
State if the following is an equation. Identify the variable from the equations with a variable. $ 7 = (11 \times 5) – (12 \times 4)$
Question 17 :
Solve the Riddle: Tell me who I am ; I shall give a pretty clue! ; You will get me back ; If you take me out of twenty two!
Question 18 :
Identify the variable from the equation 5×4 - 8 = 2x.
Question 19 :
A bird flies 1 kilometer in one minute. Can you express the distance covered by the bird in terms of its flying time in minutes? (Use t for flying time in minutes).
Question 20 :
Take Sarita's present age to be 'y' years. What will be her age 5 years from now?