Math(7A)The Rain Harvesters

Sunita's water tank had 450 litres of water at the start of the week. Due to drought, 120 litres evaporated by the end of the week. Later the same week, it rained and 180 litres of rainwater was added to their tank from their harvesting efforts. How much water is left in the tank?

• 510 L

• 330 L

• 180 L

• 120 L

Tags

BB - Operations on integers

Sunita and Rakesh have bought 256 pipes to set up a rainwater harvesting system. Can they make sets of 8 pipes each without any remaining?

• Yes

• No

Tags

BB - Factors and multiples

Sunita and Rakesh collected rainwater in two buckets. 5/8 of a litre was collected in the first bucket, and 3/8 of a litre was collected in the second bucket . How much rainwater did they collect in total?

• 8 L

• 1 L

• 1.5 L

• 2.5 L

Tags

BB - Rational Numbers

In Shaktipur, the temperature was 2°C at 8pm and dropped to -3°C by midnight. By how many degrees did the temperature fall?

• 6°C

• 5°C

• 2°C

• 3°C

Tags

B - Operations on integers

Sunita's grandma has 96 Panchatantra story books. If she wants to read equal number of story books every day, how many books should she read every day? Choose from the below options.

• 3

• 5

• 10

• 7

Tags

B - Factors and multiples

Sunita gave 2/5 of a pipe to Rakesh and 3/10 to Mr. Sharma. What fraction of the pipe is still left with her?

• 3/10

• 2/5

• 5/10

• 3/5

Tags

B - Rational Numbers

Rakesh is planning square plots for new water wells in the village. The side length of each plot is 9 metres. What is the area of one plot? (Hint : area = side²)

• 71

• 91

• 81

• 18

Tags

B - Indices

Which village received the highest rainfall in the years 2022 & 2024 respectively?

• Shaktipur, Shaktipur

• Shaktipur, Solapur

• Solapur, Shaktipur

Tags

B - Join bar graph

Sunita is distributing water collected from the rain-harvesting system to 3 neighbouring villages. Each village has 2 tanks, 20 L and 30 L respectively, which need to be filled with water. Sunita distributes this water everyday for 5 days. How will you express the amount of water distributed over 5 days to all the villages mathematically?

• 5 x (20 + 30) x 3

• (20 x 3) + (30 x 5)

• (3 x 20 + 30) x 5

• 3 x 20 + 30 x 5

Tags

P - Operations On Integers

Mr Sharma has 84 metres of blue pipe and 126 metres of red pipe. He needs to cut both types of pipes into multiple pieces of equal length for setting up a rainwater harvesting system in his garden. What is the maximum length of each piece he can cut?

• 21 m

• 14 m

• 42 m

• 7 m

Tags

P - Factors and multiples