Regular practice of Class 5 Maths RBSE Solutions We Learnt and Understood-III Question Answer sharpens your problem-solving skills.
RBSE Class 5 Maths We Learnt and Understood-III Question Answer
Question 1.
You have a half-litre water bottle. If you want to fill a 25 litre bucket with it, how many times will you have to pour water from it?
Solution:
Capacity of water bottle = \(\frac{1}{2}\) litre Capacity of bucket = 25 litre
We will have to pour water = 25 ÷ \(\frac{1}{2}\)
= 50 times
So, to fill the bucket, we will have to pour from the bottle 50 times.
Question 2.
Rama has to drink 10 ml medicine three times a day. How many ml medicine will she drink in a day? If the medicine bottle is of 200 ml then for how many days will the bottle last?
Solution:
Rama has to drink 10 ml medicine three times a day.
∴ She will drink in a day
= 3 × 10 = 30 ml
Bottle will last = (200 ÷ 30) days
Here, 6 × 30 + 20 = 200
Hence, bottle will last for 6 days and 20 ml medicine will remain.
Question 3.
A shopkeeper has only half litre and quarter litre measures. If a customer asks for 1.25 litres of milk, from which measure and for how many times will he give milk?
Solution:
1.25 litre = \(\frac{1}{2}\) litre + \(\frac{1}{2}\) litre + \(\frac{1}{4}\) litre So, the shopkeeper will give milk twice in half litre measure and once in quarter litre measure.
Question 4.
Rita bought 8 litres 300 ml of oil on Monday and 6 litres 800 ml of oil on Tuesday. How many litres of oil was bought in total on both days?
Solution:
Hence, 15 litre 100 ml oil was bought in total on both days.
Question 5.
Deepak has a can which has a capacity of 5 litres of kerosene. If he has to fill 9 cans completely, how many litres of oil will he need in total?
Solution:
Capacity of 1 can = 5 litre
∴ Oil needed to fill 9 cans completely
= 9 × 5 = 45 litre
Question 6.
If 500 ml packets are made from 10 litres of milk, then how many packets will be made in total?
Solution:
∵ 500 ml = \(\frac{1}{2}\) litre
Packets can be made from 1 litre of milk = 2
∴ Packets can be made from 10 litre milk
= 2 × 10 = 20 packets
Hence, 20 packets will be made in total.
Question 7.
If a bottle has a capacity of 2 litres of water and you are filling a 38-litre tub with it, then tell how many times water will have to be filled from the bottle to fill the tub completely?
Solution:
Capacity of a bottle =2 litre
Capacity of tub = 38 litre
To fill the tub, water will have to be filled
= 38 ÷ 2=19 times
Hence, to fill a 38 litre tub from a 2 litre water bottle, water will have to be filled 19 times.
Question 8.
Sonu has a scale at home which is digital. Sonu put a 5 kg flour packet on it and the weight came out to be 4 kg 600 grams. How many grams of flour was less?
Solution:
Weight written on the packet of flour = 5 kg
Weight shown on digital scale
= 4 kg 600 grams
∴ Flour was less = 5 kg – 4 kg 600 grams
= 400 grams
Question 9.
750 kg of potatoes were grown in one field and 950 kg in the other. How much more potatoes were grown in the second field than the first?
Solution:
Hence, 200 kg more potatoes were grown in the second field than the first.
Question 10.
Which of the items given below will be measured in millilitres and litres?
(i) Hair oil ______.
(ii) Petrol in the car ______.
(iii) Eye drops ______.
(iv) Cow’s milk ______.
(v) Water for cow ______.
Solution:
(i) Hair oil = milliliters
(ii) Petrol in the car = litres
(iii) Eye drops = milliliters
(iv) Cow’s milk = litres
(v) Water for cow = litres
Question 11.
Three people in a field together pick a total of 150 kg of tomatoes in 1 hour. If they have to pick 1200 kg of tomatoes, how much time will they take?
Solution:
Three people pick tomatoes in 1 hour
= 150 kg
∴ Time taken to pick 1200 kg of tomatoes
= 1200 ÷ 150
= 8 hours
Question 12.
If Ramesh’s school starts at 9:55 am and ends at 3:25 pm, then how many hours does he spend in school?
Solution:
School starts at = 9:55 am School ends at = 3 : 25 pm
Time spent in school = 3: 25 pm – 9:55 am = 5 hours 30 minutes
Question 13.
A train arrives at Jaipur station at 14:40 and departs at 15:00. How long does the train stop at the station?
Solution:
Arrival time of train at Jaipur station
= 14 : 40
Departure time = 15 : 00
Train stops at the station = 15 : 00-14 : 40
= 20 minutes
Question 14.
Pooja’s watch shows 1 hour 45 minutes and Ramesh’s watch shows 2 hours 20 minutes. Find the sum of the two timings.
Solution:
Question 15.
Pooja bought 1.5 kg of ladyfinger from the vegetable market which cost Rs. 90 per kg. How much money in total did she pay?
Solution:
Cost per kg of ladyfinger = ₹ 90
∴ Cost of \(\frac{1}{2}\) kg = 90 ÷ 2 = ₹ 45
∴ Cost of 1.5 kg = 90 + 45 = ₹ 135
Question 16.
If a person walks 120 steps in 1 minute, then how many steps will he walk in 1 hour?
Solution:
Person walks in 1 minute = 120 steps
∴ Person walks in 1 hour (60 minutes)
= 120 × 60 = 7200 steps
Therefore, the person will walk 7200 steps in 1 hour.
Question 17.
Reema bought 3 meters 75 cm long cloth. What will be the total length in centimetres only?
Solution:
∵ 1 meter = 100 centimeter
∴ 3 meter = 3 × 100
= 300 centimeter
∴ 3 meter 75 cm = 300 + 75
= 375 centimeter
Therefore, the total length of the cloth is 375 centimetres.
Question 18.
A child is 2 feet 6 inches tall. Find his height in inches only.
Solution:
1 Feet = 12 inch
∴ Feet
= 12 inch + 12 inch
= 24 inch
Height of the child = 2 feet + 6 inch
= 24 inch + 6 inch
= 30 inch
Therefore the height of child is 30 inch.
Question 19.
If 1 meter = 100 cm, then how many centimetres will be there in 6.5 meters?
Solution:
1 meter = 100 cm
6.5 meter = 6 meter + \(\frac{1}{2}\) meter
= 6 × 100 cm + \(\frac{1}{2}\) × 100 cm
= 600 cm+50 cm
= 650 cm
Question 20.
The distance from a field to the road is 2.25 km. What will this distance be in meters?
Solution:
1 km = 1000 meter
∴ 2.25 km = 2.25 × 1000 meter
= 2250 meter
Hence, the from field to the road is 2250 meter.
Question 21.
If the length of a scale is 30 cm , then what is the total length of 5 such scales in millimetres.
Solution:
Length of a scale = 30 cm
Total length of 5 such scales = 5 × 30
= 150 cm
= 150 × 10 mm
= 1500 mm
Question 22.
Arjun divided a 7 cm long piece of wood into 10 equal pieces. How many millimetres long will each piece be?
Solution:
Total length of the wooden piece
= 7 cm
= 7 × 10 mm
= 70 mm
On dividing piece of wood in 10 equal parts
Length of each part = 70 ÷ 10 mm
= 7 mm
Question 23.
If in the map, the kitchen is on the right side while entering from the main gate and its length is 4 cm, then tell the actual length of the kitchen in meters? (Scale 1 cm=1 meter)
Solution:
Length of kitchen in map = 4 cm Since the scale of map is 1 cm = 1 meter
∴ 4 cm = 4 meter
∴ Actual length of the kitchen = 4 meter
Question 24.
In the map, the living room and the bedroom are facing each other. What advantage can there be if the windows of both the rooms are also facing each other?
Solution:
Facing windows allow enough light and air to flow into the house. Proper circulation of air and light through the windows keeps the house clean and healthy.
Question 25.
The distance between two places is shown as 3 c m in a map. If the scale of the map is 1 cm = 2 km, then what will be the actual distance between the two places?
Solution:
Distance between two places in map
= 3 cm
Scale of the map :
1 cm = 2 km
3 cm = 3 × 2 km
= 6 km
Hence, the actual distance between the two places is 6 km.
Question 26.
If the area of the temple is twice the area of the animal enclosure and the area of the enclosure is 6 square cm, then what will be the area of the temple in square cm?
Solution:
Area of the animal enclosure
= 6 square centimeter
Since the area of the temple is twice the area of the animal enclosure.
∴ Area of the temple = 2 × 6 square centimeter
= 12 sq. cm
Question 27.
Make a map of your school showing the prayer assembly area, library, office, kitchen and three classrooms.
Solution:
Do yourself.
Question 28.
A road goes straight north. If you turn right, in which direction will you go?
Solution:
∴ If we turn right, we will go in East.
Question 29.
What things should be kept in mind while making a map?
Solution:
While making a map, one should keep in mind the size of the land, family needs, budget, local rules etc. While making the map, the exact location and size of the kitchen, rooms, bathrooms, balcony, parking etc. should be decided.
Question 30.
If the main building has three windows and two doors, then how many exits will there be in total?
Solution:
If the main building has three windows and two doors, then 2 exists will be in total.
Question 31.
Convert kilometre into meter :
(i) 5 kilometres
(ii) 10 kilometre
(iii) 7.5 kilometres
(iv) 10.7 kilometre
Solution:
(i) 5 kilometres
= 1 km + 1 km + 1 km + 1 km + 1 km
= 1000 m + 1000 m+ 1000 m + 1000 m + 1000 m
= 5000 m
(ii) 10 kilometre
∵ 1 km = 1000 m
∴ 10 km = 10 × 1000 m
= 10000 m
(iii) 7.5 kilometres
= 7 km +\(\frac{1}{2}\) km
= 7 × 1000 m + \(\frac{1}{2}\) × 1000 m
= 7000 m + 500 m = 7500 m
(iv) 10.7 kilometre
1 km = 1000 m
∴ 10.7 km = 10.7 × 1000 m
= 10700 m
Question 32.
Convert hours into minutes :
(i) 2 hours
Solution:
2 hours = 1 hour + 1 hour
= 60 minutes + 60 minutes
= 120 minutes
(ii) 7 hours
Solution:
∵ 1 hour =60 minutes
∴ 7 hours = 7 × 60 minutes
= 420 minutes
(iii) 3 hours 45 minutes
Solution:
3 hours 45 minutes
= 3 hours +45 minutes
= 3 × 60 minutes + 45 minutes
= 180 minutes + 45 minutes
= 225 minutes
(iv) 1 hour 15 minutes
Solution:
1 hour 15 minutes
= 1 hour + \(\frac{1}{4}\) hour
= 1 × 60 minutes + \(\frac{1}{4}\) × 60 minutes
= 60 minutes + 15 minutes
= 75 minutes
Question 33.
Convert grams into kilograms :
(i) 1250 grams
Solution:
= 1000 gram + 250 gram
= 1 kg + \(\frac{1}{4}\) kg
= 1 \(\frac{1}{4}\) kg
(ii) 7100 grams
Solution:
∵ 1000 gram = 1 kg
∴ 7100 gram = \(\frac{7100}{1000}\) kg = 7.1 kg
(iii) 2275 grams
Solution:
∵ 1000 gram = 1 kg
∴ 2275 gram =\(\frac{2275}{1000}\) kg = 2.275 kg
(iv) 10020 grams
Solution:
∵ 1000 gram = 1 kg
∴ 10020 gram = \(\frac{10020}{1000}\) kg = 10.02 kg
Question 34.
Convert Rupees into Paise-
(i) 3 rupees 25 paise
(ii) 5 rupees 75 paise
(iii) 10 rupees 50 paise
(iv) 20 rupees and 30 paise
Solution:
(i) 3 rupees 25 paise
= 3 × 100 paise + 25 paise
= 300 paise + 25 paise
= 325 paise
(ii) 5 rupees 75 paise
= 5 × 100 paise + 75 paise
= 575 paise
(iii) 10 rupees 50 paise
= 10 rupees + \(\frac{1}{2}\) rupees
= 10 × 100+ \(\frac{1}{2}\) × 100
= 1000 paise + 50 paise
= 1050 paise
(iv) 20 rupees and 30 paise
= 20 × 100 paise + 30 paise
= 2000 paise + 30 paise
= 2030 paise
Question 35.
Convert meter into kilometre :
(i) 3800 metres
Solution:
∵ 1000 m = 1 km
∴ 3800 m = \(\frac{3800}{1000}\) km = 3.8 km
(ii) 4650 metres
Solution:
∵ 1000 m=1 km
∴ 4650 m = \(\frac{4650}{1000}\) km = 4.65 km
(iii) 8050 metres
Solution:
8050 m = \(\frac{8050}{1000}\) km = 8.05 km
(iv) 2500 metres
Solution:
2500 m = \(\frac{2500}{1000}\) km = 2.5 km
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