## 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.

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

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 2 Chapter 2 Patterns

Recall (Text Book Page No. 19):

Circle the odd numbers in the given sequence.

(i) 26, 29, 37, 42,

45
29, 37, 45

(ii) 85, 84, 76, 65, 64
85, 65

(iii) 11, 22, 33, 44, 55, 66.
11, 33, 55

(iv) 357, 896, 572, 951, 865, 423
357, 951, 865, 423

(iv) 952, 698, 342, 780, 920, 850.
No odd numbers.

Complete the table from the above numbers.

Observe the number chart given below. Colour the odd numbers with green and even numbers with blue.

We observe that odd and even numbers occur alternatively.

Complete the patterns :

i) 21, 22, 23, ____, ____, ____, ____, ____
21, 22, 23, 24, 25, 26, 27, 28

ii) 1, 3, 5, ____, ____, ____, ____, ____
1, 3, 5, 7, 9, 11, 13, 15

iii) 2, 4, 6, ____, ____, ____, ____, ____
2, 4, 6, 8, 10, 12, 14, 16

iv) 85, 86, 87, 88, ____, ____, ____, ____, ____
85, 86, 87, 88, 89, 90, 91, 92, 93

v) 39, 41, 43, ____, ____, ____, ____, ____
39, 41, 43, 45, 47, 49, 51, 53

Let’s explore patterns while adding and subtracting odd and even numbers.

(i)

(ii)

(iii)

(iv)

(v)

(vi)

Thus, we observe that addition of odd and even numbers involve a pattern.

Lets tabulate the patterns observed.

Subtract the following numbers:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

Let’s tabulate the patterns observed.

Exercise (Text Book Page No. 22):

Question 1.
Make the patterns by multiplying with 10.

i) 1, 3, 5, 7, ____, ____, ____, ____
10, 30, 50, 70

ii) 2, 4, 6, 8, ____, ____, ____, ____
20, 40, 60, 80

iii) 1, 3, 7, 13, ____, ____, ____, ____
10, 30, 70, 130

iv) 3, 5, 9, 15, ____, ____, ____, ____
30, 50, 90, 150

Question 2.
Make the patterns by dividing with 10.

i) 110, 120, 130, ____, ____, ____, ____
11, 12, 13

ii) 210, 230, 250, ____, ____, ____, ____
21, 23, 25

iii) 470, 430, 410, ____, ____, ____, ____
47, 43, 41

iv) 540, 470, 350, ____, ____, ____, ____
54, 47, 35

v) 500, 210, 520, ____, ____, ____, ____
50, 21, 52

Question 3.
Find the rule and complete the following pattern.

I. Complete the patterns.

(i) 31, 32, 33, ____, ____, ____, ____, ____
31, 32, 33, 34, 35, 36, 37, 38

(ii) 7, 9, 11, ____, ____, ____, ____, ____
7, 9, 11, 13, 15, 17, 19, 21

(iii) 12, 14, 16, ____, ____, ____, ____, ____
12, 14, 16, 18, 20, 22, 24, 26.

II. Make the patterns by multiplying with 10.

(i) 9, 11, 13, 15, ____, ____, ____, ____, ____
90, 110, 130, 150, 170, ….

(ii) 10, 12, 14, 16, ____, ____, ____, ____, ____
100, 120, 140, 160, 180,….

III. Make the patterns by dividing with 10.

(i) 660, 640, 620, ____, ____, ____, ____, ____
66, 64, 62, 60, …

(ii) 320, 350, 380, ____, ____, ____, ____, ____
32, 35, 38, 40, ..

(i) 942 + 413

(ii) 667 + 764

V. Subtract the following numbers.

(i) 644 – 432

(ii) 739 – 527

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

Practice (Text Book Page No. 36):

Question 1.

Question 2.

Question 3.

Question 4.

b. Continue the growing pattern.

Question 1.

Question 2.

Question 3.

Practice (Text Book Page No. 37):

Continue the repeating patterns upto 3 steps in the space Provided.

Activity 3 (Text Book Page No. 37):

Activity 4 (Text Book Page No. 38):

Question 1.
Match the following and complete the pattern.

Question 2.
Match the following.

Practice (Text Book Page No. 39):

Continue the Straight – line patterns.

Activity 5 (Text Book Page No. 42):

Complete the symmetrical image.

Question 1.

Question 2.

Activity 6 (Text Book Page No. 43):

a. Draw the lines of symmetry for the following figures.

b. Circle the non – symmetrical shapes.

Activity 7 (Text Book Page No. 43):

Draw the other half from the line of symmetry to make it symmetrical.

Question 1.