#### Page No 144:

#### Question 1:

Look around you and list three things in which you find some pattern. ____________ ____________ ____________

#### Answer:

I can find patterns on the tiles in my bathroom, my mother’s saree, and my friend’s shirt.

**Disclaimer: **The answer may vary from student to student depending on their observations. It is highly recommended that the student writes the answers on their own.*The answer provided here is for reference only.*

#### Question 2:

Draw some patterns which you have found around yourself.

#### Answer:

**Disclaimer:** The answer may vary from student to student. The answer provided here is for reference only.

#### Page No 146:

#### Question 1:

**Practice Time** • Given below are some patterns.
Figure out the rule for each and continue the pattern.

(a)

(b)

(c)

(d)

(e)

(f) Morning, afternoon, evening, night, morning, ________…….

#### Answer:

(a) Rule: There is one red pot after every blue pot.

(b)
Rule: There is a **B** after every two **A**.

(c) Rule: First 3 images are repeated in the pattern.

(d) Rule: The blue triangle in the square changes its position in an anti-clockwise direction. The same pattern of first 4 images is repeated after that.

(e) Rule: The pattern is moving in a clockwise direction. The same pattern of first 4 images is repeated after that.

(f)
Rule: The four parts of the day are repeated.
Morning, afternoon, evening, night, morning, __afternoon__, __evening__, __night__.

#### Page No 147:

#### Question 1:

**Growing Patterns**

Can you see the rule and continue the pattern?

#### Answer:

In 1st image, there is only 1 arrow head pointing in the upward direction. In 2nd image, there is only 1 arrow head and is pointing in the downward direction. In 3rd image, there are only 2 arrow heads pointing in the upward direction. In 4th image, there are only 2 arrow heads pointing in the downward direction.

Similarly, the arrowheads become 3 in 5th and 6th image, pointing upward and downward alternately. So, in 7th and 8th image of the pattern, there will be 4 arrowheads, pointing upward and downward alternately.

#### Page No 148:

#### Question 1:

Try these also.

#### Answer:

#### Question 2:

**My Own Patterns** • Here is your space to make your own patterns:
(i)

(ii)

(iii)

(iv)

#### Answer:

Some of the patterns are given below for reference:

**Disclaimer:** The patterns may vary from student to student. It is highly recommended that the student prepares the answer on their own.

#### Question 3:

Ask your friends to continue the patterns made by you. **Number Patterns** We have made some patterns with pictures. We can make patterns with numbers too. Like 21, 41, 61, 81, 101, ……..
You know the next number, don’t you?
This is a growing pattern. It can go on and on.
21, 41, 61, 81, 101, 121, 141, 161, ………

#### Answer:

21, 41, 61, 81, 101, 121, 141, 161, __181__, __201__, __221__, __241__, __261__, __281__, __301__………….

#### Page No 149:

#### Question 1:

A Look for the rules and continue these growing patterns: (a) 51, 56, 61, 66, _____, _____ ……. (b) 7, _____, 21, 28, 35, _____, _____ …… (c) 2, 4, 8, 16, 32, _____, _____, _____ (d) 12A, 13B, 14C, _____, _____.

#### Answer:

(a)
51 + __5__ = 56
56 + __5__ = 61
So, we keep adding 5 in the next number to complete the pattern further.
51, 56, 61, 66, __71__, __76__, __77__ …….

(b) 7

×1 = 7 7

×2 = 14 7

×3 = 21
So, we keep writing table of 7 to complete the pattern further.
7, __14__, 21, 28, 35,__42__, __49__, ……

(c) 2

×1 = 2 2

×2 = 4 2

×4 = 8 2

×8 = 16
So, we keep multiplying 2 with the previous answer received to complete the pattern further.
2, 4, 8, 16, 32, __64__, __128__, __256__

(d)
Here each number increases by 1 and alphabets are written in their order along with the increasing numbers.
12A, 13B, 14C, __15D__, __16E__.

#### Question 2:

Look at these growing patterns. Find out what to add to each number to get the next one: (a) 1, 3, 6, 10, _____, _____, _____, _____, _____ (b) 0, 2, 6, 12, _____, _____, _____, _____, _____ (c) 1, 3, 7, 13, _____, _____, _____, _____, _____ (d) 2, 3, 6, 11, 18, _____, _____, _____, _____, _____

#### Answer:

(a)
1 + 2 = 3
3 + 3 = 6
6 + 4 = 10
10 + 5 = 15
1, 3, 6, 10, __15__, __21__, __28__, __36__, __45__.

(b)
0 + 2 = 2
2 + 4 = 6
6 + 6 = 12
12 + 8 = 20
0, 2, 6, 12, __20__, __30__, __42__, __56__, __72__.

(c)
1 + 2 = 3
3 + 4 = 7
7 + 6 = 13
13 + 8 = 21
1, 3, 7, 13, __21__, __31__, __43__, __57__, __73__

(d)
2 + 1 = 3
3 + 3 = 6
6 + 5 = 11
11 + 7 = 18
2, 3, 6, 11, 18, __27__, __38__, __51__, __66__, __83__.

#### Page No 150:

#### Question 1:

Now you also make your own secret messages. _______________________________________________ _______________________________________________ _______________________________________________

#### Answer:

4 I 5 L 4 O 5 V 4 E 5 M 4 A 5 T 4 H 5 S 4

**Disclaimer:** The answer may vary from student to student. It is highly recommended that the student prepare their answer on their own.

#### Page No 151:

#### Question 1:

**Even and Odd Number Patterns**

91 81 71 61 51 41 31 21 11 1 | 92 82 72 62 52 42 32 22 12 2 | 93 83 73 63 53 43 33 23 13 3 | 94 84 74 64 54 44 34 24 14 4 | 95 85 75 65 55 45 35 25 15 5 | 96 86 76 66 56 46 36 26 16 6 | 97 87 77 67 57 47 37 27 17 7 | 98 88 78 68 58 48 38 28 18 8 | 99 89 79 69 59 49 39 29 19 9 | 100 90 80 70 60 50 40 30 20 10 |

Half these numbers are in yellow. What patterns do you see in these numbers? Continue the same pattern and fill in the blanks:
96, 98, _____, 102, _____, _____, _____, _____, _____
How far can you continue this pattern?
These numbers have a special name. They are called **even** numbers.
Do any of these even numbers end with 3 or 5?
What do even numbers end with?
Look at the pattern of numbers in blue. Continue the pattern and fill in the blanks:
99, 101, _____, 105, 107, _____, _____, _____
What do the numbers in blue end with?
All numbers that end with 1, 3, 5, 7 or 9 are called **odd** numbers.
Write all odd numbers between 400 and 410.
_________________________________________________________________
Write all even numbers between 155 and 165.
_________________________________________________________________
If we add 1 to any odd number we get an _________ (even/odd) number.
If we add 1 to any even number we get an _________ (even/odd) number.
What do you get if you add an even number to an odd number?

#### Answer:

All these numbers have either 0, 2, 4, 6 or 8 at their units place.
96, 98, __100__, 102, __104__, __106__, __108__, __110__, __112__……

This can be continued without any end.

No, none of these even numbers end with 3 or 5.

Even numbers end with 2, 4, 6, 8 or 0.
99, 101, __103__, 105, 107, __109__, __111__, __113__…….

Numbers in blue end with 1, 3, 5, 7 or 9.

#### Page No 152:

#### Question 1:

**Names in an Order** Adil has to arrange this list so that the names starting with A come first and then come those with B, C, D and so on. Number these names in the order in which they will come.
Sharada

Mahadevan

Tsering

Adil

Gurinder

Baichung

Harsha

Raja

Narayan

Kavita

Warsha

Elvis

Jalaj

#### Answer:

Sharada

11 Mahadevan

8 Tsering

12Adil

1

Gurinder

4 Baichung

2 Harsha

5 Raja

10

Narayan

9 Kavita

7 Warsha

13 Elvis

3 Jalaj

6

#### Question 2:

Which of the following names have the same pattern? Mark ✓. Harsh, Anna, Kanak, Munna, Ongbi

#### Answer:

Harsh, Anna, Kanak, Munna, Ongbi ✓ ✓

**NCERT Solutions for Class 3 Math**

- Chapter 1 – Where To Look From
- Chapter 2 – Fun With Numbers
- Chapter 3 – Give And Take
- Chapter 4 – Long And Short
- Chapter 5 – Shapes And Designs
- Chapter 6 – Fun With Give And Take
- Chapter 7 – Time Goes On
- Chapter 8 – Who Is Heavier
- Chapter 9 – How Many Times
- Chapter 10 – Play With Patterns
- Chapter 11 – Jugs And Mugs
- Chapter 12 – Can We Share
- Chapter 13 – Smart Charts
- Chapter 14 – Rupees And Paise

**NCERT Solutions for Class 3**