## Samacheer Kalvi 3rd Standard Maths Book Solutions Term 3 Chapter 7 Information Processing

Quick ways of adding (Text Book Page No. 49):

Exercise (Text Book Page No. 50):

Find the sum of

i) 5 + 1 + 5 + 9

5 + 5 = 10
9 + 1 = 10
Hence the sum = 10 + 10 = 20

ii) 2 + 5 + 5 + 7 + 1

2 + 7 + 1 = 10
5 + 5 = 10
Hence the sum = 10 + 10 = 20

iii) 3 + 6 + 1 + 2 + 8

3 + 6 + 1 = 10
8 + 2 = 10
Hence the sum = 10 + 10 = 20

Add the given big numbers using the above method (Text Book Page No. 51):

Question 1.

543 = 500 + 40 + 3
210 = 200 + 10

Question 2.

298 = 200 + 90 + 8
501 = 500 + 1

Question 3.

798 = 700 + 90 + 8
654 = 600 + 50 + 4

Question 4.

348 = 300 + 40 + 8
681 = 600 + 80 + 1

Question 5.

543 = 500 + 40 + 3
218 = 200 + 10 + 8

Question 6.

716 = 700 + 10 + 6
540 = 500 + 40 + 0

Quick ways of subtracting (Text Book Page No. 52):

Subtract the given numbers using the above method (Text Book Page No. 53):

Question 1.

Question 2.

Question 3.

Question 4.

Question 5.

Question 6.

Question 7.

Question 8.

Question 9.

Mental Arithmetic (Text Book Page No. 54):

Able to add and subtract single digit numbers and two digit numbers mentally:

Question 1.
In a tree planting ceremony, 6 coconut saplings and 5 neem saplings are planted. Find the total number of saplings planted.
6 + 5 = 11

Question 2.
There are 5 tender coconuts in a tree. If they pick 3 tender coconuts, then find the remaining tender coconuts?
5 – 3 = 2

Question 3.
46 boys and 27 girls visited a park on Sunday. Find the total number of boys and girls who visited the park?
46 + 27 = 73

Question 4.
50 pens are in a box. Out of which, 34 pens are given to the students. Find the number of pens left?
50 – 34 = 16

Question 5.
70 balls are given to 7 persons. How many balls are given to each person?
70 ÷ 7 = 10 [10 × 7 = 70]

Question 6.
8 books can be arranged in a row. In how many rows can 48 books be arranged?
48 ÷ 8 = 6 [8 × 6 = 48]

Question 7.
10 pens can be kept in a box. How many boxes are needed to keep 100 pens?
100 ÷ 10 = 10

3rd Standard Maths Guide Information Processing Additional Questions and Answers

Question 1.
Find the sum of

(i) 7 + 7 + 3 + 3

7 + 3 = 10 and
7 + 3 = 10
Hence the sum of the number = 10 + 10 = 20

(ii) 6 + 4 + 4 + 6

6 + 4 = 10 and
4 + 6 = 10
Hence the sum of the number = 10 + 10 = 20

Question 2.

Question 3.

Question 4.
Subtract

Question 5.
Subtract

## Samacheer Kalvi 3rd Standard Maths Book Solutions Term 3 Chapter 6 Time

Times of a Day (Text Book Page No. 43):

Question 1.
Sort the events according to the time of happening
1. Sun rise
2. Sun set
3. Coming to school
4. Returning home from school
5. Breakfast
6. Dinner
7. Darkness outside
8. Say Good Morning
9. Say Good Evening

Chronological order (Text Book Page No. 44):

Question 1.
Write ‘F’ for the event which comes first and ’N’ for the event which happens next.

Question 2.
Arrange the following events in chronological order. (Text Book Page No. 45):

i. Started walking, birth, started schooling in class 1, studying in Class 3, studying in Class 2.
(i) Birth
(ii) Started walking .
(iii) Started schooling in class 1
(iv) Studying class 2
(v) Studying class 3

ii. Sowing seeds, plucking fruits, growing fruit, flowering in plant, watering plants.
(i) Sowing seeds
(ii) Watering plants
(iii) flowering in plants
(iv Growing fruit
(v) Plucking fruits.

Time cyclic events in a year (Text Book Page No. 46):

Question 1.
List the events that form a cycle and that do not form a cycle.
i. Coming to school
ii. Rotation of a clock
iii. bays of a week
iv. Growth of your pet
v. Building your house
vi. Making of idly

Question 2.
Complete the events of given cycle.

3rd Standard Maths Guide Time Additional Questions and Answers

Question 1.
Arrange the following events in chronological order.
(i) Brushing teeth, going to school, waking up, having breakfast, taking bath
Waking up, Brushing teeth, taking bath, breakfast, going to school.

(ii) Pongal, New year. Republic day, Christmas, Independence day.
New year, Pongal, Republic day, Independence day, Christmas.

Question 2.
Write ‘F’ for the event which comes first and ‘N’ for the event which happens next.

Question 3.
List the events that form a cycle and that do not form a cycle.
i. Months of a year
ii. Elections
iii. Growth of a plant
iv. Construction of a house
v. Olympics

Question 4.
Arrange the following dates in chronological order.
17/11/2019, 18/08/2019
05/08/2018, 04/01/2017

Question 5.
Arrange the following time in chronological order.
Morning 7.00 clock, Night 8:00 clock
Afternoon 2:00 clock, Evening : 5:00 clock

## Samacheer Kalvi 3rd Standard Maths Book Solutions Term 3 Chapter 5 Money

Rupees and Paise (Text Book Page No. 36):

Question 1.
Convert the following rupees into paise.

Add the following (Text Book Page No. 37):

Question 1.

Question 2.

Question 3.

Question 4.

Question 5.

Question 6.

Subtract the following (Text Book Page No. 37):

Question 1.

Question 2.

Question 3.

Question 4.

Question 5.

Question 6.

Exercise (Text Book Page No. 38):

Question 1.
Sengothai bought a school bag for ₹ 210.30 and a sports shoe for ₹ 260.20 find the amount to be returned by the shopkeeper if she has paid five hundred rupees to the shopkeeper.

School bag = 210.30 (+)
Sports shoe = 260.20
Total cost = 470.50

Subtracting rupees:

Sengothai paid = 500.00
Total cost = (-) 470.50
Shopkeeper has to return = 29.50

Question 2.
Kumaran’s father asked him to get a change for ₹ 200 from his uncle. If his uncle gave him a hundred rupee note and a fifty rupees note. How much more his uncle has to give him?

1 hundred rupees = 100.00
1 fifty rupees = (+) 50.00
Total = 150.00

Subtracting rupees:

Father gave = 200.00
Uncle returned = 150.00
More uncle need to give him = 50.00

Rate Charts and Simple Bills:

Question 1.
The following are the items eaten by Raju and his family. Fill in the blanks using the given bill.

i. Name of the Restaurant _________
Hotel foods

ii. Bill number _________
32

iii. bate of the bill ________
30.10.2019

iv. Total number of items eaten _________
3

v. Total amount of money to be paid _________
310

Question 2.
Complete the given bill and find the total amount to be paid.

a.

b.

c.

Question 3.
Prepare Bills for the items purchased using the given rate chart.

i. Ramya bought two pens three erasers and a sketch packets. Prepare a bill for her purchase.

ii. Ravi bought an eraser a sharpener and two pens. Prepare a bill for his purchase.

3rd Standard Maths Guide Money Additional Questions and Answers

Question 1.

Question 2.

Subtract:

Question 3.

Question 4.

Question 5.
Complete the given table and find the total amount to be paid.

## Samacheer Kalvi 3rd Standard Maths Book Solutions Term 3 Chapter 4 Measurements

Recall (Text Book Page No. 26):

Some vessels full of water are given here. Observe them and tell which one can hold more water and which one holds less water.

Mug hold less and bucket hold more water.

Measurement by non standard tools (Text Book Page No. 28):

Question 1.
Tick the container that holds more water.

Question 2.
Which among the given container will hold more water?

Measurement by standard tools (Text Book Page No. 32):

Question 1.
Complete the table classifying these under the given table.

 Less than 1 litre vessel More than 1 litre vessel 1. Medicine bottle 1. Pot 2. Tumbler 2. Water can 3. Water pot 3. Oil can

Question 2.
Tick the appropriate unit to measure the given liquid.

Question 3.
Tick the biggest unit.
i. a) 500 ml
b) 100 ml
c) 50 ml
d) 75 ml
a) 500 ml

ii. a) 200 ml
b) 300 ml
c) 150 ml
d)175 ml
b) 300 ml

iii. a) 5 l
b) 2 l
c) 8 l
d) 7 l
c) 8 l

iv. a) 3 l
b) 300 ml
c) 30 ml
d) 30 l
d) 30 l

v. a) 250 ml
b) 1500 ml
c) 760 ml
d) 75 l
d) 75 l

Question 4.
Circle the smallest unit.

i. a) 250 ml
b) 350 ml
c) 50 ml
d) 750 ml
c) 50 ml

ii. a) 300 ml
b) 350 ml
c) 800 ml
d) 275 ml
d) 275 ml

iii. a) 10 l
b) 3 l
c) 9 l
d) 6 l
b) 3 l

iv. a) 3 l
b) 350 ml
c) 5 ml
d) 40 l
c) 5 ml

v. a) 2500 ml
b) 100 ml
c) 810 ml
d) 175 l
100 ml

Question 5.
How many litres of water do you use for the following purpose in your house? Complete the table.

3rd Standard Maths Guide Measurements Additional Questions and Answers

Question 1.
Tick the appropriate unit to measure the given liquid.

Question 2.
Tick the biggest unit.

i. a) 250 ml
b)180 ml
c) 80 ml
d) 160 ml
a) 250 ml

ii. a) 130 ml
b)170 ml
c) 300 ml
d) 450 ml
d) 450 ml

iii. a) 7 l
b) 6 l
c) 3 l
d) 4 l
a) 7 l

iv. a) 2 l
b) 325 ml
c) 6 ml
d) 45 l
d) 45 l

v. a) 300 ml
b) 1750 ml
c) 1500 ml
d) 2 l
d) 2 l

Question 3.
Circle the smallest unit.

i. a) 325 ml
b) 375 ml
c) 125 ml
d) 630 ml
c) 125 ml

ii. a) 150 ml
b) 80 ml
c) 272 ml
d) 500 ml
b) 80 ml

iii. a) 15 l
b) 12 l
c) 13 l
d) 2 l
d) 2 l

iv. a) 7 l
b) 300 ml
c) 250 ml
d) 1 l
c) 250 ml

v. a) 250 ml
b) 195 ml
c) 4 l
d) 15 ml
d) 15 ml

## Samacheer Kalvi 3rd Standard Maths Book Solutions Term 3 Chapter 3 Patterns

Iterative patterns and processes:

Question 1.
Continue the pattern to complete the rangoli.

Question 2.
Make a pattern of your own on the given category and draw a rangoli.

Question 3.
Draw a pullikolams by looking at the reference image without lifting your hand.

Question 4.
Draw 2 pullikolams of your choice along the given dots.

Patterns obtained by adding numbers (Text Book Page No. 22):

Complete the addition table and observe the pattern in them.

Question 2.
Write the numbers which add upto the given addition fact.

Question 3.
Find out the missing numbers and write them in the given blank.

Exercise (Text Book Page No. 25):

Continue the patterns by using multiplication as repeated addition.

a.

b.

Exercise (Text Book Page No. 26):

Express the division facts as repeated subtraction using patterns.

a) 24 ÷ 3

24 ÷ 3 = 8

b) 22 ÷ 2

22 ÷ 2 = 11

c) 32 ÷ 4

32 ÷ 4 = 8

d) 15 ÷ 3

15 ÷ 3 = 5

3rd Standard Maths Guide Patterns Additional Questions and Answers

Question 1.
Find out the missing numbers and write them in the given blank.

Question 2.
Continue the patterns by using multiplication as repeated addition.

Question 3.
Express the division facts as repeated subtraction using patterns.

a) 24 ÷ 4

24 ÷ 4 = 6

b) 21 ÷ 3

21 ÷ 3 = 7

## Samacheer Kalvi 3rd Standard Maths Book Solutions Term 3 Chapter 2 Numbers

Equal sharing and repeated subtraction (Text Book Page No. 11):

Question 1.
Suppose Kabilan has to share the mangoes among 15 of his friends. How many mangoes would each of them get? How Many steps would he require to share the mangoes among them.

Complete the number line.

Number of steps = 2

Complete the number line – 15

Repeated subtraction statement 30 -15 -15 = 0
Kabilan shared 30 mangoes among 15 of his friends in 2 steps.
Each friend got 2 mangoes.

Complete the table. (Text Book Page No. 12):

Equal Sharing (Text Book Page No. 13):

Question 2.
Rangamma has 36 coconuts and arranges them into group of 4 each. Find the number of groups.

The number line can be drawn as

The number statement is ___________.

The number line can be drawn as

The number statement is 36 ÷ 4 = 9.

Question 3.
Rangamma has got 48 gooseberries and arranges them into group of 6 each. Find the number of groups.

The number line can be drawn as

The number can be drawn as

The number statement is 48 ÷ 6 = 8.

Question 4.
Find few other ways that Rangamma can group these 48 gooseberries and write the number statements.

a.
48 ÷ 2 = 24

b.
48 ÷ 3 = 16

c.
48 ÷ 4 = 12

d.
48 ÷ 6 = 8

e.
48 ÷ 8 = 6

f.
48 ÷ 12 = 4

g.
48 ÷ 16 = 3

h.
48 ÷ 24 = 2

i.
48 ÷ 1 = 48

Exercise (Text Book Page No. 14):

a. Divide 8 Balls into a group of 2 Balls each.

8 ÷ 2 = 4

b. Divide 15 oranges into a group of 3 each.

15 ÷ 3 = 5

c. Divide 20 cups into groups of 5 each.

20 ÷ 5 = 4

Multiplication and Division (Text Book Page No. 17):

Question 1.
Construct the division fact for the multiplication tables 3.

Question 2.
Construct the division fact for the multiplication tables 4.

Question 3.
Construct the division fact for the multiplication tables 5.

Question 4.
Construct the division fact for the multiplication tables 10.

Exercise (Text Book Page No. 19):

Divide and find the quotient.

Question 1.
20 ÷ 4 =
4 × 1 = 4
4 × 2 = 8
4 × 3 = 12
4 × 4 = 16
4 × 5 = 20

20 ÷ 4 = 5

Question 2.
10 ÷ 2 =
2 × 1 = 2
2 × 2 = 4
2 × 3 = 6
2 × 4 = 8
2 × 5 = 10

10 ÷ 2 = 5

Question 3.
24 ÷ 3 =
3 × 1 = 3
3 × 2 = 6
3 × 3 =9
3 × 4 = 12
3 × 5 = 15
3 × 6 = 18
3 × 7 = 21
3 × 8 = 24

24 ÷ 3 = 8

Question 4.
10 ÷ 10 =
10 × 1 =10

10 ÷ 10 = 1

Question 5.
30 ÷ 5 =
5 × 1 = 5
5 × 2 = 10
5 × 3 = 15
5 × 4 = 20
5 × 5 = 25
5 × 6 = 30

30 ÷ 5 = 6

Question 6.
14 ÷ 2 =
2 × 1 = 2
2 × 2 = 4
2 × 3 = 6
2 × 4 = 8
2 × 5 = 10
2 × 6 = 12
2 × 7 = 14

14 ÷ 2 = 7

3rd Standard Maths Guide Numbers Additional Questions and Answers

Question 1.
Divide 15 pencils into a group of 5 each.

15 ÷ 5 = 3

Question 2.
Divide 16 balloons into groups of 4 each.

16 ÷ 4 = 4

Question 3.
Divide and find the quotient.

(i) 32 ÷ 4 =
4 × 1 = 4
4 × 2 = 8
4 × 3 = 12
4 × 4 = 16
4 × 5 = 20
4 × 6 = 24
4 × 7 = 28
4 × 8 = 32

32 ÷ 4 = 8

(ii) 21 ÷ 3 =
3 × 1 = 3
3 × 2 = 6
3 × 3 = 9
3 × 4 = 12
3 × 5 = 15
3 × 6 = 18
3 × 7 =21

21 ÷ 3 = 7

Question 4.
Arjun has 10 apples. He divides them among 2 of his friends. How many apples would each friend get?

Each would get 5 apples.

## Samacheer Kalvi 3rd Standard Maths Book Solutions Term 3 Chapter 1 Geometry

Question 1.
Draw the diagonals for the given rectangle.

Question 2.
How many diagonals will be there in a cuboid?
16

Match the properties of 2D shapes by observing their sides and corners (vertices).

Question 1.
Opposite sides are equal.

Question 2.
There are no sides and corners.

Question 3.
Sides may or may not be equal.

Question 4.
All the four sides are equal.

Properties of 3D Objects:

Question 1.
Pick out the shapes with (i) curved surfaces (ii) flat surfaces (iii) curved and flat surfaces from the given picture and completed table.

Question 2.
Complete the table by counting the sides, corners and diagonals of the given 3D shapes.

Tangrams (Text Book Page No. 7):

Identify the tangram pieces used in the given images by colouring and numbering the pieces as in the reference figure.

Question 1.
A tangram house

Question 2.
A tangram boat

Question 3.
A tangram swan

Tessellation (Text Book Page No. 8):

Question 1.
Complete the shapes by filling the tiles.

(i)

(ii)

Question 2.
Draw one more tile to continue the pattern.

i)

ii)

iii)

## Samacheer Kalvi 3rd Standard Maths Book Solutions Term 2 Chapter 5 Information Processing

Mark routes for the given locations.

Given below is a map of a town showing some important places/ landmarks. Divya wants to go to library. One of the ways to reach the library from her house is shown below.

Observe the map and answer the following questions.

Question 1.
Name the location she passed in the given route.
Bank and Post office.

Question 2.
From the library, Divya needs to reach pharmacy. Trace the path and name the landmarks between library and pharmacy.
Park, Market, Hospital.

Question 3.
Trace another route from Divya’s house to reach library.

Question 4.
Mention any two places between museum and park.
Pharmacy, Hospital, Market.

Exercise (Text Book Page No. 32):

Help the bus driver by marking the routes in the map to land the bus in bus stand.
Mark all the possible routes and suggest the best route.

Ways:

Question 1.
A → B → C → I → L → E

Question 2.
A → B → C → I → F → K → M

Question 3.
A → B → N → G → J → F → H → M

Question 4.
Write the shortest route.
A → D

Question 5.
Write the longest route.
A → B → N → G → J → F → H → M → K → E → L → D.

The quick way of finding 10 more than and less than a given number.

Colour the table in the next page by skip counting in tens as per the instructions given below.

1. Colour the numbers starting from 12 in blue.
2. Colour the numbers starting from 6 in pink.
3. Colour the numbers starting from 5 in yellow.
4. Colour the numbers starting from 9 in orange.

After colouring observe the table and fill in the blanks.

Question 1.
10 more than 45 is _____.
55

Question 2.
10 less than 45 is _____.
35

Question 3.
10 more than 22 is _____.
32

Question 4.
10 less than 22 is _____.
12

Activity (Text Book Page No. 34):

Complete the blanks.

a.

b.

3rd Standard Maths Guide Information Processing Additional Questions and Answers

Question 1.
Anu wants to go to school, one of the ways to reach the school from her house in shown below.

Observe the map and answer the following questions.

(i) Name the location she passed in the given route.
Bank, park.

(ii) From the school Anu needs to reach post office. Trace the path and name the land marks between school and post office.
Left side in park.

(iii) Trace another route from Anu’s house to reach school.
Right side in Bank.

(iv) Mention any two places between Fire station to hospital.
Market, Pharmacy.

## Samacheer Kalvi 3rd Standard Maths Book Solutions Term 2 Chapter 4 Time

Activity 1 (Text Book Page No. 28):

Look at the position of the hour hand and write the time in the given box.

Question 1.

3’0 clock

Question 2.

8’0 clock

Question 3.

9’0 clock

Question 4.

4’0 clock

Question 5.

2’0 clock

Activity 2 (Text Book Page No. 29):

Draw the hands in the following clocks to show the given time.

Question 1.

Question 2.

Question 3.

Question 4.

Question 5.

Activity 3 (Text Book Page No. 29):

Tick the clock which shows the time mentioned below.

3rd Standard Maths Guide Time Additional Questions and Answers

I. Look at the position of the hour and write the time in the given box.

Question 1.

10’0 clock

Question 2.

8’0 clock

Question 3.

3’0 clock

II. Draw the hands in the following clocks to show the given time.

Question 1.
2’0 clock

Question 2.
4’0 clock

Question 3.
12’0 clock

## Samacheer Kalvi 3rd Standard Maths Book Solutions Term 2 Chapter 3 Measurements

Recall (Text Book Page No. 23):

Tick the heavier object.

Question 1.
Find the number of 100g packets used to fill 3kg of rice.
3kg =30 packets of 100g.

Exercise (Text Book Page No. 26):

Question 1.
Circle the odd one out.

i. a) gram
b) Kilogram
c) metre
c) metre

ii. a) 50 g
b) 500 g
c) 100 cm
c) 100 cm

iii. a) 1 m
b) 2 kg
c) 5 kg
a) 1 m

Question 2.
Fill in the blanks.

i) 1000 grams = _____ kg
1

ii) 2 kilograms = _____ grams
2000

Question 3.
Write in short form.

i) gram = _____
g

ii) Kilogram = _____
kg

Question 4.
Find the number of bags to be used to fill the given items, if one bag can hold 100 g of the given items.

Question 5.

i) Price of 100g of ice cream is ₹ 20. Ramya bought 1Kg of ice cream. How much should she pay to the shopkeeper?
Price of 100g ice cream = ₹ 20
Let 1 piece of ice cream = 100 g
Ice cream = 1 kg = 1000 g
No. of ice cream pieces for 1 kg = $$\frac{1000}{100}$$ = 10 pieces
Price of 1kg ice cream = 10 × 20 = ₹ 200

ii) Price of 1 Kg of sugar is ₹ 50. Ranjith bought 2000 g of sugar. Find the amount she has to pay to the shopkeeper.
Price of 1 kg sugar = ₹ 50
Ranjith bought 2000 g = 2 kg
Amount he has to pay to the shopkeeper = 2 × 50 = ₹ 100

iii) Saranya had 3 Kg of flour to be packed into packets of 500 g each. In how many packets can she pack the flour?
Saranya had weight of flour = 3 kg = 3000 g
Weight of flour in a packet = 500 g
No. of packets = = 6 packets.

3rd Standard Maths Guide Measurements Additional Questions and Answers

I. Fill in the blanks.

(i) 3000 grams = _____ kg
3

(ii) 4 kg = _____ grams
4000

(iii) 4500 grams = _____ kg _____ grams
4 kg 500 grams

(iv) 3250 grams = _____ kg _____ grams
3 kg 250 grams

(v) 6 kg 400 gm = _____ grams
6400.

II. Answer the following:

(i) Price of 1kg of rice is ₹ 60. Jaswitha bought 3000 g of Rice. Find the amount she has to pay to the shopkeeper.