NCERT Solutions for Class 3 Maths Chapter 11 Filling and Lifting

Exercise 11: Filling and Lifting

Question. Why do you think Chintu does not take the challenge?
Answer: Chintu is scared that he cannot drink 6 large glasses of juice.
In simple words: Chintu thinks the big glasses are too large for him to finish.

Exam Tip: Look at the size of the glasses - drinking six large glasses is much harder than drinking six small ones.

Question. Do you think you can take the challenge?
Answer: No, I cannot take this challenge because drinking 6 large glasses is too much for me.
In simple words: I cannot drink that much juice at one time.

Exam Tip: Give a personal and realistic answer based on how much liquid you can comfortably drink.

Question 1. Who drank the most milk?
Answer: Ritu was the one who drank the greatest amount of milk.
In simple words: Ritu drank more milk than anyone else.

Exam Tip: Look at the size of the glass - the biggest glass holds the most liquid.

Question 2. Who drank the least milk?
Answer: Nita drank the smallest amount of milk.
In simple words: Nita drank less milk than her friends.

Exam Tip: The smallest glass contains the least amount of liquid.

Question 3. Fill in the blanks with 'more' or 'less'.
a. Nita's glass holds ............. milk than Monu's glass.
b. Monu's glass holds ............. milk than Nita's glass.
c. Ritu's glass holds ............. milk than Nita's glass.
Answer:
a. Nita's glass holds less milk than Monu's glass.
b. Monu's glass holds more milk than Nita's glass.
c. Ritu's glass holds more milk than Nita's glass.
In simple words: Nita has the smallest glass, so it holds less than Monu's. Monu and Ritu have bigger glasses, so they hold more than Nita's.

Exam Tip: Compare the heights and widths of the glasses to decide which one holds more or less.

Question 4. Tick the right name.
a. Nita/Monu/Ritu's glass holds the most milk.
b. Nita/Monu/Ritu's glass holds the least milk.
Answer:
a. Ritu's glass holds the most milk.
b. Nita's glass holds the least milk.
In simple words: Ritu's big glass holds the largest amount of milk, and Nita's small glass holds the smallest amount of milk.

Exam Tip: Select Ritu for the most milk and Nita for the least milk by looking at their glass sizes.

Question. Get three vessels (like a small bowl, glass, and bottle) of different sizes from your home. Guess: how many small bowls will fill the glass? How many glasses will fill the bottle? First guess and then pour water from one vessel into another to check if your guess is correct.
Answer:

In simple words: We guessed how many bowls fill a glass and a bottle. When we actually tried it, it took 6 bowls to fill the glass and 18 bowls to fill the bottle.

Exam Tip: When you do this experiment at home, write down your own guesses first, then fill and count to find the actual numbers.

Question 1. Fill in the blanks with 'the most' or 'the least'.
a. The glass holds ............. water.
b. The bottle holds ............. water.
Answer:
a. The glass holds the least water.
b. The bottle holds the most water.
In simple words: Between the glass and the bottle, the glass is smaller, so it holds less water. The bottle is much bigger, so it holds more water.

Exam Tip: Out of the options compared, the smallest container always holds the least, and the largest holds the most.

Question 2. Name the vessels that are used in your home that can store more water than your bottle.
Answer: Some common household items that can hold more water than a bottle are buckets, large jugs, pots, bathtubs, clay pitchers, water tanks, and big drums.
In simple words: We use big containers like buckets, pots, and water tanks at home to store lots of water.

Exam Tip: Think of large storage items in your kitchen or bathroom that are much bigger than a water bottle.

Question. Let us do:
1. How many ladles fill the bowl?
2. How many glasses can be filled by the jug?
3. What will you use to fill half of the glass?
4. Which of these would you use for distributing the lemonade in glasses? Why?
5. How many glasses can be filled with 3 jugs of lemonade?
6. How many ladles are needed to fill 4 glasses?
7. Can you use a ladle, bowl or a glass to find out how much lemonade a jug can hold?
Answer:
1. Ten: It takes 10 ladles to fill up the bowl.
2. Five: A single jug can fill up 5 glasses of lemonade.
3. We can use a bowl to fill up half of the glass.
4. It is best to use the jug to distribute the lemonade because it has a spout which makes it easy to pour without spilling.
5. 15 glasses: Since 1 jug fills 5 glasses, 3 jugs can fill 15 glasses (\( 3 \times 5 = 15 \)).
6. 20 ladles: To fill 4 glasses, we will need 20 ladles (since each glass needs 5 ladles, \( 4 \times 5 = 20 \)).
7. Yes, it is easiest to use a glass to measure how much liquid the jug can hold because the glass is smaller and fits into the jug's volume nicely.
In simple words: This activity teaches us about measuring with different containers. A jug holds more than a glass, and a glass holds more than a ladle, so we can use them to measure each other.

Exam Tip: When multiplying, use the basic unit: if 1 jug = 5 glasses, then 3 jugs = 3 × 5 = 15 glasses.

Question 1. Tick the appropriate word in the sentences given below.
a) The glass holds more than/less than than 1 litre.
b) The bowl holds more than/less than than 1 litre.
c) The Jug holds more than/less than/exactly 1 litre.
Answer:
a) The glass holds less than 1 litre.
b) The bowl holds less than 1 litre.
c) The Jug holds exactly 1 litre.
In simple words: A regular drinking glass and a bowl are small, so they hold less than 1 liter of water. The jug is made to hold exactly 1 liter.

Exam Tip: Standard kitchen jugs are often marked to show exactly 1 liter, while normal cups and bowls always hold less than a liter.

Question 2. Find the vessels at home that are exactly 1 litre use your 1 litre bottle to check.
Answer: Some common vessels at home that are exactly 1 liter include standard water bottles, milk cartons, juice packs, and small thermos flasks.
In simple words: We can use a 1-liter bottle to find other things that hold the exact same amount of liquid.

Exam Tip: Look at the labels on milk packets or juice cartons at home to find things that are exactly 1 liter.

Question 3. Identify vessels that are more than or less than 1 litre.
Answer:
- More than 1 litre: Large cooking pots, big juice bottles, cooking oil cans, and kettles.
- Less than 1 litre: Drinking mugs, small bowls, glasses, tea cups, and small saucepans.
In simple words: Big kitchen pots and kettles hold more than 1 liter. Small cups, bowls, and drinking glasses hold less than 1 liter.

Exam Tip: Group your containers by comparing them to a standard 1-liter bottle to see if they are bigger or smaller.

Question. Look at the picture and tick the appropriate word.
a) The mug holds a litre/half litre of water.
b) The glass holds a litre/half litre/quarter litre of water.
Answer:
a) The mug holds a half litre of water.
b) The glass holds a quarter litre of water.
In simple words: The mug holds half of a liter, and the smaller glass holds one-fourth (a quarter) of a liter.

Exam Tip: A half-liter is half the size of a liter, and a quarter-liter is even smaller, equal to one-fourth of a liter.

Question. First guess and check with the 1 litre bottle.
(a) How much water does a bucket hold at your home: more than / less than/equal to 1 litre.
(b) How much water does a mug hold at your home: less than /more than / equal to half a litre.
(c) How much water does a glass hold : less than / more than / equal to a quarter litre.
Answer:
(a) A bucket at home holds more than 1 litre.
(b) A mug at home holds less than half a litre.
(c) A glass holds more than a quarter litre.
In simple words: A bucket is very large and holds much more than 1 liter. A drinking mug is usually smaller than half a liter, and a glass can hold more than a quarter liter of water.

Exam Tip: Think about your everyday use: a bucket holds several liters of water for bathing, while a drinking mug is small.

Question. Do you and your friends agree on which is lighter and heavier?
Answer:

In simple words: My friend and I both agree on which things are heavier. For example, a heavy school bag weighs more than a lunch bag, and a watermelon is much heavier than an apple.

Exam Tip: You can feel which item is heavier just by holding one in each hand and comparing them.

Question 1. Write the names of the objects and their weights in the table given below:
Answer:

In simple words: We can weigh small items using erasers and coins on a balance scale. A pencil is balanced by 4 erasers, and a sharpener is as light as 1 coin.

Exam Tip: Use a simple hand-held balance scale to count how many erasers or coins it takes to keep both sides level.

Question 2. Let us make another weight to measure slightly heavier objects. Fill a matchbox with sand and use this to weight the following objects. Guess the weight in terms of matchboxes and then verify.
Answer:

In simple words: We guessed how many sand-filled matchboxes it takes to weigh different items. We then used a scale to find the actual number of matchboxes needed.

Exam Tip: A matchbox filled with sand makes a great, uniform weight unit for measuring small classroom objects.

Question. Write the names of all things measured in the order of lightest to heaviest.
Answer: The order of objects from lightest to heaviest is: sharpener, eraser, marbles, spoon, pencil box, book, water bottle, shoes, and school bag.
In simple words: We put the items in a line starting with the lightest one (the sharpener) and ending with the heaviest one (our school bag).

Exam Tip: When sorting from lightest to heaviest, always place the smallest, lightest plastic items first, and large daily-use items last.

Question. Do this activity in groups. Among your group find a bag that is heavier than yours. Find a bag that is lighter than yours. Discuss.
1. Why is your bag heavier or lighter?
2. Count the number of books to see if there is a difference in the number of books in the bag.
3. Can you make the two bags of about the same weight by moving a book? Discuss.
Answer:
1. My school bag is heavier because I am carrying more textbooks and notebooks today.
2. Yes, there is a clear difference because my bag contains five books while my friend's bag has only three.
3. Yes, we can balance the weights of the two bags by moving one thick math book from my bag into my friend's bag.
In simple words: Carrying more books makes a bag heavier. We can make two bags weigh almost the same by transferring a book from the heavier bag to the lighter one.

Exam Tip: The weight of a school bag depends directly on the number and thickness of the books stored inside it.

Question 4. Write the names of the objects that are 1 kilogram.
Answer: Some things that weigh around 1 kilogram are a packet of sugar, a bag of flour, a small bag of rice, a block of cheese, and a packet of pasta.
In simple words: Many common food items we buy from the shop, like sugar or rice packets, weigh exactly 1 kilogram.

Exam Tip: 1 kilogram (1 kg) is a standard metric unit used to measure weight. Look for the "1 kg" mark on grocery packets.

Question 5. Can you guess which of these things are likely to be lighter or heavier than 1 Kilogram? Put a tick mark in the appropriate box.
Answer:

In simple words: Large furniture like a table is heavier than 1 kg. Small everyday items like pencils, books, and pillows are much lighter than 1 kg.

Exam Tip: Compare the weight of any object to a 1-liter water bottle (which weighs exactly 1 kg) to easily classify it.

Question 6. Look at the balance and tick the correct word.
a) Each daal packet weighs a half kilogram/kilogram.
b) Each tea packet weighs a half kilogram/quarter kilogram/kilogram.
Answer:
a) Each daal packet weighs a half kilogram.
b) Each tea packet weighs a quarter kilogram.
In simple words: Since two daal packets balance a 1 kg weight, each packet is half of a kilogram. Since two tea packets balance a half-kilogram weight, each tea packet is a quarter of a kilogram.

Exam Tip: When two identical items balance a known weight, divide the total weight by 2 to find the weight of a single item.

Question 1. Montu poses a puzzle to his friends: 3 balls look similar in size. One of them is heavier and 2 balls are equal in weight. You have only a pan-balance and no weights. Using the 3 balls and the pan-balance, can you identify which is the heavy ball?
(a) How many times will you have to weight?
(b) Use the balance only one time and tell which is the heavy ball.
Answer:
(a) You only need to use the balance scale 1 time to find the heavier ball.
(b) Place one ball on the left pan and one ball on the right pan, leaving the third ball aside. If both sides remain balanced, the third ball is the heavy one. If the scale tilts, the ball on the side that goes down is the heavy ball.
In simple words: Put two balls on the scale. If they weigh the same, the one you didn't weigh is the heavy one. If they don't weigh the same, the heavier one will pull its side down.

Exam Tip: This logic puzzle is solved in a single step because the third ball is our secret answer if the first two are identical.

Question 2. There are three same-sized balls of different weights and colours: Red, Orange and Green. You can use the pan balance for it but cannot use weights. How will you find which on is the heaviest and which one is the lightest?
Answer:
- Finding the Heaviest Ball: First, put the red ball on one pan and the orange ball on the other to see which is heavier. Next, take the heavier ball and weigh it against the green ball. The one that pulls the scale down in this final comparison is the heaviest ball overall.
- Finding the Lightest Ball: First, weigh the red ball against the orange ball on the scale to find which is lighter. Then, compare that lighter ball with the green ball. The ball on the side that stays higher in this final comparison is the lightest ball of all three.
In simple words: We compare the balls in pairs. First, we find the heavier ball of the first two, and then weigh it against the third to find the overall heaviest. We do the same with the lighter ones to find the lightest.

Exam Tip: We can easily sort three items by making just two comparisons on a balance scale.