Worksheet Solutions: A Trip To Bhopal - 1

Q1: Multiple Choice Questions (MCQs).

(i) Which pair of numbers make the sum more than 600.
(a) 200 and 350
(b) 450 and 250
(c) 100 and 550
(d) 91 and 380
Ans: (b), (c)
Explanation: If we add the numbers, we get:
450 + 250 = 700, which is more than 600.
100 + 550 = 650, which is also more than 600.
200 + 350 = 550 (not more than 600) and 91 + 380 = 471 (not more than 600). So options (b) and (c) are correct.

Q2: Convert the following to ml. 

(i) 5 l = __ ml. 
(ii) 3½ l = __ ml.
Ans:
We know 1 l = 1000 ml.
5 l = 5 × 1000 ml = 5000 ml.
3½ l = 3.5 × 1000 ml = 3500 ml.

Q3: Use your ruler and measure the length of the following items and write in the given box.

(i) 

(ii) 

(iii) 

(iv) 

Ans:

(i) 5.5 cm
(ii) 2.5 cm
(iii) 2 cm
(iv) 2.6 cm

Q4: Compare the units of length by using >, < or =.

(i) 5 km   5,000 m
(ii) 19 km  20,000 m
(iii) 3009 m  4 km
(iv) 7 km 600 m  7600 m
(v) 14,050 m  14 km 500 m

Ans:
(i) = (because 5 km = 5,000 m)
(ii) < (because 19 km = 19,000 m, which is less than 20,000 m)
(iii) < (because 4 km = 4,000 m and 3,009 m < 4,000 m)
(iv) = (because 7 km 600 m = 7,600 m)
(v) < (because 14,050 m < 14 km 500 m is 14,500 m)

Q5: Answer the following Questions.

(i) 218 students are going on a trip to Bhopal. If one bus can carry 50 people, then what is the total number of buses required to carry all the students and 8 teachers?

Ans: Total people = 218 + 8 = 226.
Each bus carries 50 people.
50 × 4 = 200 (4 buses are not enough).
50 × 5 = 250 (5 buses are enough).
So, 5 buses are required to carry all the people.

(ii) The total weight of 3 balls is 630 g. What is the total weight of 5 such balls?
Ans: Weight of 1 ball = 630 ÷ 3 = 210 g.
Weight of 5 balls = 210 × 5 = 1050 g.

(iii) If the water level of the dam on the Narmada River is 98 meters in the summer season, in comparison to 138 meters in the rainy season. Then what is the difference in the water level of the dam in the summer and the rainy season?

Ans: Difference = 138 m - 98 m = 40 m.
So, the difference is 40 metres.

(iv) The total weight of a bag with 8 books inside is 2 kg 340 g. If the bag alone weighs 950 g, what is the weight of the books?
Ans:
Total weight = 2 kg 340 g = 2340 g.
Weight of books = 2340 g - 950 g = 1390 g.

(v) If the total cost at a petrol pump for 100 litres of diesel is Rs. 3500, then what is the cost of 1 liter of diesel?
Ans: Cost of 1 litre = 3500 ÷ 100 = Rs. 35.

(vi) In a food fest, People having token numbers from 100 to 150 are standing in a line. Sheoli is standing exactly in the middle of the line is having a token number. What is the token number of Sheoli?

Ans: The middle number between 100 and 150 = (100 + 150) ÷ 2 = 125.
So, Sheoli's token number is 125.

(vii) How many three-digit numbers can you make using 2, 5, and 7?
Ans: You can arrange three different digits in all possible orders: 3 × 2 × 1 = 6 ways.
The numbers are: 257, 275, 527, 572, 725, 752.

(viii) After 8 years, Meghali would be twice the age of what she is currently. What is her present age?
Ans: Let the present age be x years. After 8 years, she will be x + 8 years and this equals twice her present age, so x + 8 = 2x.
Therefore, x = 8 years.
Check: After 8 years, she will be 16 years, which is twice 8.

(ix) A bus carries 30 persons. How many people will be carried by 30 buses?
Ans: Number of persons = 30 × 30 = 900 persons.

(x) A small ant climbs a wall 5 cm in 1 minute but slips down 2 cm. How much time would it take to climb to 11 cm?

Ans: In 1 minute, the ant makes a net gain of 5 - 2 = 3 cm.
After 1 minute: 3 cm.
After 2 minutes: 3 + 3 = 6 cm.
In the 3rd minute, the ant climbs 5 cm from 6 cm to 11 cm and reaches the top before slipping.
So, it takes 3 minutes.

(xi) Ram bought 7.50 l, 2.25 l, and 8.25 l of milk from three dairies, respectively. How much milk did he purchase in all?

Ans: Total = 7.50 l + 2.25 l + 8.25 l = (7.50 + 2.25) + 8.25 = 9.75 + 8.25 = 18.00 l.
So, he purchased 18 litres of milk.

(xii) A group of children went for a double-decker boat trip to view the lake, and they paid Rs. 500 in total. If the cost of the trip for an individual is Rs. 50, then how many children went for the trip?
Ans: Number of children = 500 ÷ 50 = 10 children.

(xiii) Tell a number which can be divided by 3, 4 and lies between 10 and 15?
Ans: The number divisible by both 3 and 4 is the LCM of 3 and 4, which is 12.
So, 12 lies between 10 and 15 and is divisible by both.

(xiv) On a school trip, the teachers arranged lunch for the children. Each child got 1 packet of chips, 1 banana, and 5 biscuits. If there were 40 children and 10 of them did not take any biscuits, then how many biscuits were distributed to the children?
Ans:
Children who took biscuits = 40 - 10 = 30.
Total biscuits = 30 × 5 = 150 biscuits.

(xv) After 6 years Madhu would be thrice the age of what she is currently. What is her present age?
Ans: Let the present age be x. Then x + 6 = 3x, so 6 = 2x and x = 3 years.
So, Madhu is 3 years old now. (Check: After 6 years, she will be 9 years, which is three times 3.)

(xvi) A small ant climbs a wall 6 cm in 1 minute but slips down 3 cm. How many tunes would it take to climb to 9 cm?
Ans: Net gain in 1 minute = 6 - 3 = 3 cm.
After 1 minute: 3 cm.
In the 2nd minute, the ant climbs 6 cm from 3 cm to 9 cm and reaches the top before slipping.
So, it takes 2 minutes.