Exercise 2.1 - Chapter 2 Measurements Term 2 6th Maths Guide Samacheer Kalvi Solutions - SaraNextGen [2024-2025]

Updated By SaraNextGen

On April 24, 2024, 11:35 AM

Question $1 .$
Fill in the blanks.
(i) $250 \mathrm{ml}+\frac{1}{2} \mathrm{ml}=$ $1 .$
(ii) $150 \mathrm{~kg} 200 \mathrm{~g}+55 \mathrm{~kg} 750 \mathrm{~g}=\ldots \mathrm{kg}_{\ldots} \mathrm{g}$.
(iii) $20 \mathrm{l}-11500 \mathrm{ml}$ (iv) $450 \mathrm{ml} \times 5=$ (v) $50 \mathrm{Kg} \div 100 \mathrm{~g}=$ Solution:
(i) $\frac{3}{4} 1$
(ii) $205 \mathrm{~kg} 950 \mathrm{~g}$
(iii) $181500 \mathrm{ml}$
(iv) $21250 \mathrm{ml}$
(v) 500

Question $2 .$
True or False
(i) Pugazhenthi ate $100 \mathrm{~g}$ of nuts which is equal to $0.1 \mathrm{~kg}$.
(ii) Meena bow it $250 \mathrm{ml}$ of butter milk which is equal to $2.5 \mathrm{l}$.
(iii) Karkuzhali's bag $1 \mathrm{~kg} 250 \mathrm{~g}$ and poong- kodi's bag $2 \mathrm{~kg} 750 \mathrm{~g}$. The total weight of their bags 4 $\mathrm{kg}$.
(iv) Vanmathi bought 4 books each weighing $500 \mathrm{~g}$. Total weight of 4 books is $2 \mathrm{~kg}$.
(v) Gayathiri bought $1 \mathrm{~kg}$ of birthday cake. She shared $450 \mathrm{~g}$ with her friends.
The weight of cake remaining is $650 \mathrm{~g}$
Solution:
(i) True
(ii) False
(iii) True
(iv) True
(v) False

Question $3 .$
Convert into indicated units:
(i) $10 \mathrm{l}$ and $5 \mathrm{ml}$ into $\mathrm{ml}$
(ii) $4 \mathrm{~km}$ and $300 \mathrm{~m}$ into $\mathrm{m}$
(iii) $300 \mathrm{mg}$ into $\mathrm{g}$
Solution:
(i) $10 \mathrm{l}$ and $5 \mathrm{ml}$
$=10 \times 1000 \mathrm{ml}+5 \mathrm{ml}$
$=10,000 \mathrm{ml}+5 \mathrm{ml}[\therefore 1 \mathrm{l}=1000 \mathrm{ml}]$
$=10,005 \mathrm{ml}$.
$\therefore 10 \mathrm{l}$ and $5 \mathrm{ml}=10,005 \mathrm{ml}$.
(ii) $4 \mathrm{~km}$ and $300 \mathrm{~m}$ into $\mathrm{m}$.
$4 \mathrm{~km}$ and $300 \mathrm{~m}$
$=4 \times 1000 \mathrm{~m}+300 \mathrm{~m}$
$=4000 \mathrm{~m}+300 \mathrm{~m}[\therefore 1 \mathrm{~km}=1000 \mathrm{~m}]$
$=4300 \mathrm{~m}$
$\therefore 4 \mathrm{~km}$ and $300 \mathrm{~m}=4300 \mathrm{~m}$
(iii) $300 \mathrm{mg}$ into $\mathrm{g}$.
$300 \mathrm{mg}=300.0 \times \frac{1}{1000} \mathrm{~g}\left[\because 1 \mathrm{~g}=1000 \mathrm{mg} ; \frac{1}{1000} \mathrm{~g}=1 \mathrm{mg}\right]$ $300 \mathrm{mg}=0.3 \mathrm{~g}$.
 

Question $4 .$
Convert into higher units:
(i) $13000 \mathrm{~mm}(\mathrm{~km}, \mathrm{~m}, \mathrm{~cm})$
(ii) $8257 \mathrm{ml}(\mathrm{kl}, \mathrm{l})$
Solution:
(i) $13000 \mathrm{~mm}(\mathrm{~km}, \mathrm{~m}, \mathrm{~cm})$
(ii) $8257 \mathrm{ml}(\mathrm{kl}, \mathrm{l})$

Question $5 .$
Convert into lower units:
(i) $15 \mathrm{~km}(\mathrm{~m}, \mathrm{~cm}, \mathrm{~mm})$
Solution:
$15 \mathrm{~km}=15 \times 1000 \mathrm{~m}=15000 \mathrm{~m}$
$15 \mathrm{~km}=15 \times 100000 \mathrm{~cm}$
$=1500000 \mathrm{~cm}$
$15 \mathrm{~km}=15 \times 1000000 \mathrm{~mm}$
$=15000000 \mathrm{~mm}$
(ii) $12 \mathrm{~kg}(\mathrm{~g}, \mathrm{mg})$
Solution:
$\begin{aligned}
&12 \mathrm{~kg}=12 \times 1000 \mathrm{~g} \\
&=12000 \mathrm{~g} \\
&12 \mathrm{~kg}=12 \times 1000000 \mathrm{mg} \\
&=12000000 \mathrm{mg}
\end{aligned}$
 

Question $6 .$
Compare and put $>$ or $<$ or $=$ in the following:
(i) $800 \mathrm{~g}+150 \mathrm{~g}_{\ldots} 1 \mathrm{~kg}$
(ii) $600 \mathrm{ml}+400 \mathrm{ml}$
(iii) $6 \mathrm{~m} 25 \mathrm{~cm}$ $600 \mathrm{~cm}+25 \mathrm{~cm}$
(iv) $88 \mathrm{~cm}$ $8 \mathrm{~m} 8 \mathrm{~cm}$
(v) $55 \mathrm{~g}$ $550 \mathrm{mg}$

Solution:
(i) $800 \mathrm{~g}+150 \mathrm{~g}<3 \mathrm{~kg}$
(ii) $600 \mathrm{ml}+400 \mathrm{ml}=1 \mathrm{l}$
(iii) $6 \mathrm{~m} 25 \mathrm{~cm}=600 \mathrm{~cm}+25 \mathrm{~cm}$
(iv) $88 \mathrm{~cm}<8 \mathrm{~m} 8 \mathrm{~cm}$
(v) $55 \mathrm{~g}>550 \mathrm{mg}$
 

Question $7 .$
Geetha brought 21 and $250 \mathrm{ml}$ of water in a bottle. Her friend drank $300 \mathrm{ml}$ from it. How much of water is remaining in the bottle?
Solution:
Total Capacity of water $=21250 \mathrm{ml}$
$=(2 \times 1000+250) 1$
$=2000+250 \mathrm{ml}$
$=2250 \mathrm{ml}$
Water Consumed $=300 \mathrm{ml}$
Water remaining in the bottle $=(2250-300) \mathrm{ml}$
$=1950 \mathrm{ml}$
$=1$ litre $950 \mathrm{ml}$
 

Question $8 .$
Thenmozhi's height is $1.25 \mathrm{~m}$ now. She grows for $5 \mathrm{~cm}$ every year. What would be her height after 6 years?
Solution:
Thenmozhi's present height $=1.25 \mathrm{~m}$
Rate of growth per year $=5 \mathrm{~cm}$
Her growth in 6 years $=5 \mathrm{~cm} \times 6=30 \mathrm{~cm}$.
After 6 years her height $=1.25 \mathrm{~m}+30 \mathrm{~cm}$
$=1.25 \times 100+30 \mathrm{~cm}$
$=125+30 \mathrm{~cm}$
$=155 \mathrm{~cm}$.
$\therefore$ After 6 years Thenmozhi's height will be $155 \mathrm{~cm}$.

Question $9 .$
Priya bought $22 \frac{1}{2} \mathrm{~kg}$ of onion/ Krishna bought $18 \frac{3}{4} \mathrm{~kg}$ of onion and sethu bought $9 \mathrm{~kg} 250 \mathrm{~g}$ of onion, what is the total weight of onion did they buy?
Solution:
Total weight of onion bought
$\begin{aligned}
&=22 \frac{1}{2}+18 \frac{3}{4}+9 \frac{1}{4} \mathrm{~kg} \\
&=22 \mathrm{~kg} 500 \mathrm{~g}+18 \mathrm{~kg} 750 \mathrm{~g}+9 \mathrm{~kg} 250 \mathrm{~g} \\
&=49 \mathrm{~kg} 1500 \mathrm{~g} \\
&=50 \mathrm{~kg} 500 \mathrm{~g}
\end{aligned}$

Question 10 .
Maran walks $1.5 \mathrm{~km}$ every day to reach the school while Mahizhan walks $1400 \mathrm{~m}$. Who walks more distance and by how much?
Solution:
Distance which Maran walks $=1.5 \mathrm{~km}=1.5 \times 1000 \mathrm{~m}=1500 \mathrm{~m}$
The distance which Mahizhan walks $=1400 \mathrm{~m}$.
Here $1500>1400$
$\therefore$ Difference $=1500-1400=100 \mathrm{~m}$.
$\therefore$ Maran walks more distance $=100 \mathrm{~m}$.

Question $11 .$
In a JRC one day camp, $150 \mathrm{gm}$ of rice and $15 \mathrm{ml}$ oil are needed for a student. If there are 40 students to attend the camp how much of rice and oil are needed?
Solution:
Rice needed for a student $=150 \mathrm{gm}$
Rice needed for 40 students $=40 \times 150 \mathrm{gm}=6000 \mathrm{gm}=6 \mathrm{~kg}$
Oil needed for a student $=15 \mathrm{ml}$
Oil needed for 40 students $=40 \times 15 \mathrm{ml}=600 \mathrm{ml}$

Question $12 .$
In a school, 200 litres of lemon juice is prepared. If $250 \mathrm{ml}$ lemon juice is given to each student, how many students get the juice?
Solution:
Total lemon juice prepared $=200 \mathrm{l}=200 \times 1000 \mathrm{ml}=2,00,000 \mathrm{ml}$.
$\therefore$ Quantity of Lemon juice given to one student $=250 \mathrm{ml}$.
$\therefore$ Number of students can get $=\frac{2,00,000}{250}=800$
$\therefore 800$ students can get the lemon juice.
 

Question $13 .$
How many glasses of the given capacity will fill a 2 litre jug?
(i) $100 \mathrm{ml} \ldots \ldots \ldots . .$
(ii) $50 \mathrm{ml}$
(iii) $500 \mathrm{ml} \ldots \ldots \ldots$
(iv) $11 \ldots \ldots \ldots$
(v) $250 \mathrm{ml}$

Solution:
(i) 20
(ii) 40
(iii) 4
(iv) 2
(v) 8

Objective Type Questions
Question $14 .$
$9 \mathrm{~m} 4 \mathrm{~cm}$ is equal to
(a) $94 \mathrm{~cm}$
(b) $904 \mathrm{~cm}$
(c) $9.4 \mathrm{~cm}$
(d) $0.94 \mathrm{~cm}$
Solution:
(b) $904 \mathrm{~cm}$

Question $15 .$
$1006 \mathrm{~g}$ is equal to ..........
(i) $1 \mathrm{~kg} 6 \mathrm{~g}$
(ii) $10 \mathrm{~kg} 6 \mathrm{~g}$
(iii) $100 \mathrm{~kg} 6 \mathrm{~g}$
(iv) $1 \mathrm{~kg} 600 \mathrm{~g}$
Solution:
(i) $1 \mathrm{~kg} 6 \mathrm{~g}$

Question $16 .$
Every day $150 \mathrm{l}$ of water is sprayed in the garden. Water sprayed in a week is
(a) 7001
(b) 10001
(c) 9501
(d) 10501
Solution:
(d) 10501

Question $17 .$
Which is the greatest? $0.007 \mathrm{~g}, 70 \mathrm{mg}, 0.07 \mathrm{cg} \ldots \ldots \ldots$
(i) $0.07 \mathrm{cg}$
(ii) $0.007 \mathrm{~g}$
(iii) $70 \mathrm{mg}$
(iv) all are equal
Solution:
(iii) $70 \mathrm{mg}$
 

Question $18 .$
$7 \mathrm{~km}-4200 \mathrm{~m}$ is equal to
(a) $3 \mathrm{~km} 800 \mathrm{~m}$
(b) $2 \mathrm{~km} 800 \mathrm{~m}$
(c) $3 \mathrm{~km} 200 \mathrm{~m}$
(d) $2 \mathrm{~km} 200 \mathrm{~m}$
Solution:
(b) $2 \mathrm{~km} 800 \mathrm{~m}$