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Maths 2 Marks

T2 CH2 Measurments · Tamil Nadu Board STD 6 (Tamil - English Medium). 30 questions.

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30 questions · timed · auto-graded

Question 22 Marks
The saplings are planted at a distance of $2$ m $50$ cm in the road of length $5$ km by Saravanan. If he has $2560$ saplings, how many saplings will be planted by him? how many saplings are left?
Answer
$5 km =5000 m =500,000 cm \text { Number of saplings }=\frac{500,000}{250}=2000$
$2 m 50 cm =250 cm$
$\text { Remaining saplings }=2560-2000=560$
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Question 32 Marks
Two pipes whose lengths are 7 m 25 cm and 8 m 13 cm joined by welding and then a small piece 60 cm is cut from the whole. What is the remaining length of the pipe?
Answer
Total length $=7 m 25 cm$
$8 m 13 cm$
$15 m 38 cm$ or $1538 cm$
length detatched $=60 cm$
Remaining length $=14 m 78 cm$
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Question 42 Marks
Change the following into 24 hour format
12.00 midnight
Answer
12 hour time a.m/p.m > 12 Add 12 hr to p.m > 12 24 hours time
12.00 midnight midnight (p.m) (12 + 12) hour 24:00 hours or
00:00 hours
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Question 52 Marks
Change the following into 24 hour format
3.15 a.m
Answer
12 hour time a.m/p.m > 12 Add 12 hr to p.m > 12 24 hours time
3.15 a.m a.m − 03:15 hours
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Question 62 Marks
Change the following into 24 hour format
12.35 p.m
Answer
12 hour time a.m/p.m > 12 Add 12 hr to p.m > 12 24 hours time
12.35 p.m p.m − 12:35 hours
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Question 72 Marks
Change the following into 24 hour format
12.00 noon
Answer
12 hour time a.m/p.m > 12 Add 12 hr to p.m > 12 24 hours time
12.00 noon noon − 12:00 hours
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Question 82 Marks
Change the following into 12 hour format
00:00 hours
Answer
24 hour format > 12 hours If yes then subtract 12 12 hour format
00:00 hours No − 12 midnight
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Question 92 Marks
Change the following into 12 hour format
11:20 hours
Answer
24 hour format > 12 hours If yes then subtract 12 12 hour format
11:20 hours No − 11:20 a.m
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Question 102 Marks
Change the following into 12 hour format
02:00 hours
Answer
24 hour format > 12 hours If yes then subtract 12 12 hour format
02:00 hours No − 2 a.m
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Question 112 Marks
Change the following into 12 hour format:
08:45 hours
Answer
24 hour format > 12 hours If yes then subtract 12 12 hour format
08:45 hours No − 8:45 a.m
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Question 122 Marks
Change the following into 12 hour format
21:10 hours
Answer
24 hour format > 12 hours If yes then subtract 12 12 hour format
21:10 hours Yes 21 − 12 = 9 9:10 p.m
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Question 132 Marks
Convert the following:
$25200$ seconds into hours
Answer
$25200 \text { seconds into hours }$
$25200 \text { seconds }=\frac{25200}{60} \text { minutes }$
$=420 \text { minutes }$
$=\frac{420}{60} \text { hours }$
$=7 \text { hours }$
$\therefore 25200 \text { seconds }=7 \text { hours }$
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Question 142 Marks
Convert the following:
$580$ minutes into hours
Answer
$580 \text { minutes into hours }$
$580 \text { minutes }=\frac{580}{60} \text { hours }$
$=9 \text { hours } 40 \text { minutes }$
$\therefore 580 \text { minutes }=9 \text { hours } 40 \text { minutes }$
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Question 152 Marks
Convert the following:
$20$ minutes into seconds
Answer
$20$ minutes into seconds:
$ 1 min =60 \text { seconds }$
$20 min =20 \times 60 \text { seconds }$
$=1200 \text { seconds } $
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Question 162 Marks
Calculate your age as on 01.06 .2018
Answer
My date of birth is 31.03.2006
Age to be calculated upto 01.06.2018
Date of birth 31.03.2006
00.02.12
Age is 12 years 2 months
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Question 172 Marks
Convert 38 months into years
Answer
Convert 38 months into years
1 year has 12 months
38 months $=\frac{38}{12}$ years
$=3$ years 2 months
$\therefore 38$ months $=3$ years 2 months.
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Question 182 Marks
Priya bought $22 \frac{1}{2} kg$ of onion, Krishna bought $18 \frac{3}{4} kg$ of onion and Sethu bought $9\ kg\ 250\ g$ of onion. What is the total weight of onion did they buy?
Answer
$ \text { Priya's weight }=22\ kg\ 500\ g$
$\text { Krishna's weight }=18\ kg\ 750\ g$
$\text { Sethu's weight }=9\ kg\ 250\ g$
$\text { Total weight }=49\ kg\ 1500\ g$
$=49\ kg +1\ kg\ 500\ g$
$=50\ kg +500\ g $
Their total weight $=50\ kg\ 500\ g$.
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Question 192 Marks
Convert into lower units:
$12$ kg (g, mg)
Answer
$12 kg ( g , mg )$
$12 kg =12 \times 1000 g$
$=12,000 g$
$12 kg =12 \times 10,00,000 mg$
$=1,20,00,000 mg$
$12 kg =12,000 g$
$=1,20,00,000 mg .$
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Question 202 Marks
Convert into indicated units:
10 l and 50 ml into ml
Answer
$10 l \text { and } 50 ml$
$=10 \times 1000 ml +50 ml$
$=10,000 ml +50 ml \ldots[\therefore 1 I =1000 ml ]$
$=10050 ml$
$\therefore 10 l \text { and } 50 ml =10050 ml .$
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Question 212 Marks
Convert into indicated units:
$4$ km and $300$ m into m
Answer
$4 km$ and $300 m$ into $m$.
$4 km$ and $300 m$
$ =4 \times 1000 m +300 m$
$=4000 m +300 m \ldots[\therefore 1 km =1000 m ]$
$=4300 m $
$\therefore 4 km$ and $300 m =4300 m$
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Question 222 Marks
Convert into indicated units:
$300$ mg into g
Answer
$300 m g \text { into } g$
$300 m g=300.0 \times \frac{1}{1000} g \ldots\left[\because 1 g=1000 m g \frac{1}{1000} g=1 m g\right]$
$300 m g=0.3 g$
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Question 232 Marks
How many glasses of the given capacity will fill a $2$ litre jug?
$250$ ml ________
Answer
$ 2 \text { litre }=2 \times 1000 ml =2000 ml$
$250 ml$
$\frac{2000}{250}=8 $
$8$ glasses of $250 ml$ can fill the jug
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Question 242 Marks
How many glasses of the given capacity will fill a $2$ litre jug?
$1$ l ________
Answer
$ 2 \text { litre }=2 \times 1000 ml =2000 ml$
$1 l$
$\frac{21}{11}=2 $
$2$ glasses of $1 I$ can fill the jug
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Question 252 Marks
How many glasses of the given capacity will fill a $2$ litre jug?
$100$ ml ________
Answer
$ 2 \text { litre }=2 \times 1000 ml =2000 ml$
$100 ml$
$\frac{2000}{100}=20 $
$20$ glasses of $100 ml$ can fill the jug
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Question 262 Marks
How many glasses of the given capacity will fill a $2$ litre jug?
$50$ ml ________
Answer
$2 \text { litre }=2 \times 1000 ml =2000 ml$
$50 ml$
$\frac{2000}{50}=40$
$40$ glasses of $50 ml$ can fill the jug
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Question 272 Marks
How many glasses of the given capacity will fill a $2$ litre jug?
$500$ ml _______
Answer
$ 2 \text { litre }=2 \times 1000 ml =2000 ml$
$500 ml$
$\frac{2000}{500}=4 $
$4$ glasses of $500 ml$ can fill the jug
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Question 282 Marks
In a school, $200$ litres of lemon juice is prepared. If $250$ ml lemon juice is given to each student, how many students get the juice?
Answer
Total lemon juice prepared $=200 I$
$ =200 \times 1000 ml$
$=200000 ml . $
$\therefore$ Quantity of Lemon juice given to one student $=250 ml$.
$\therefore$ Number of students can get $=\frac{200000}{250}=800$
$\therefore 800$ students can get the lemon juice.
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Question 292 Marks
In a JRC one day camp, 150 gm of rice and 15 ml oil are needed for a student. If there are 40 students to attend the camp how much of rice and oil are needed?
Answer
$\text { Rice needed for one student }=150 gRice \text { needed for } 40 \text { students }=150 g \times 40$
$=6000 g$
$=\frac{6000}{1000} kg \text { Oil needed for one student }=15 mlO \text { il needed for } 40 \text { students }=15 ml \times 40$
$=6 kg$
$=600 ml$
$=\frac{600}{1000}$
$=0.61$
$\therefore \text { For the camp } 6 kg \text { of rice and } 0.6 I \text { of oil needed. }$
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Question 302 Marks
Maran walks 1.5 km every day to reach the school while Mahizhan walks 1400 m. Who walks more distance and by how much?
Answer
Distance which Maran walks $=1.5 km$
$=1.5 \times 1000 m$
$=1500 m$
The distance which Mahizhan walks $=1400 m$.
Here $1500>1400$
$\therefore$ Difference $=1500-1400$
$
=100 m
$
$\therefore$ Maran walks more distance $=100 m$.
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