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## NCERT Class 2 Joyful-Mathematics Chapter 3 Fun with Numbers

## NCERT Class 2 Joyful-Mathematics Chapter 3 Fun with Numbers

NCERT Class 2 Joyful-Mathematics Chapter 3 Fun with Numbers

**Textual Exercise**

3 Fun with Numbers

NCERT Class 2 Joyful-Mathematics Chapter 3 Fun with Numbers (Page 23)

**Let us Do**

**Look at the Ginladi.**

**A. How many beads are there in ginladi? **

**Answer : **There are 100 beads ginladi.

**B. There are some blank cards on the ginladi. Write the numbers on them by countingthe number of beads.**

**Answer : **36, 48, 56, 79 and 85.

**C. Make number cards for the following numbers and place them on your ginladi.38, 44, 58, 65, 98**

**Answer : **Please refer the image given below.

**Look at the number strip and fill in the blanks.**

**A. The butterfly moves ____ steps forward to reach the pink flower.**

*B. The honey bee moves* **____****steps forward to reach the red flower and ____**

*steps forward*

to reach the yellow flower.to reach the yellow flower.

**C. The squirrel jumps 2 steps backward, five steps forward and again 3 steps backward. It will reach at ____** .

**D. The frog jumps 2 steps forward, seven steps backward and again 3 steps backward to reach ____**.

Answer :

A. The butterfly moves **6** *s*teps forward to reach the pink flower.

B. The honey bee moves **5** steps forward to reach the red flower and **10** steps forward

to reach the yellow flower.

C. The squirrel jumps 2 steps backward, five steps forward and again 3 steps backward. It will reach at **95.**

D. The frog jumps 2 steps forward, seven steps backward and again 3 steps backward to reach **60**..

NCERT Class 2 Joyful-Mathematics Chapter 3 Fun with Numbers (Page 24)

Let us Play

**Guess my Number**

**A child thinks of a number and other children have to guess it. Children will ask questions like, is it more than 50? Are the two digits of the number same? Questions that can be answered in โyes/noโ. they can ask maximum 10 questions to guess the number**

**Answer : **

Is it greater than 50? Answer : Yes.

Is it less than 100? Answer : Yes.

Is it more than 75? Answer : No.

Is it less than 60? Answer : No.

Is it more than 65? Answer : No.

Is it greater than 63? Answer : Yes.

Is it greater than 64? Answer : Yes.

Is it 64? Answer : Yes.

**Guess my Place**

Three ants are sitting on a number line. Write the numbers for these ants

**Answer : **

NCERT Class 2 Joyful-Mathematics Chapter 3 Fun with Numbers (Page 25)

**Let us Do**

Look! How Jumpy, the frog is jumping. Do you observe a pattern here?

**Answer : **

NCERT Class 2 Joyful-Mathematics Chapter 3 Fun with Numbers (Page 26)

**Let us Do**

A. On the number chart, use skip counting in two and draw ๐ด on the numbers. Now use skip counting in five and ๐บ draw on the numbers in the number chart.

B. Write down the numbers that are common to the skips in twos and fives.

C. Write down the numbers that are common to the skips in twos, threes and fives.

D. Write down the numbers common to the skips of fives and sevens?

**Answer : **

A. On the number chart, use skip counting in two and draw ๐ด on the numbers. Now use skip counting in five and ๐บ draw on the numbers in the number chart.

๐ด 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100

๐บ 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100

**Answer : **

B. Write down the numbers that are common to the skips in twos and fives.

10, 20, 30, 40, 50, 60, 70, 80, 90, 100

C. Write down the numbers that are common to the skips in twos, threes and fives.

30, 60, 90

D. Write down the numbers common to the skips of fives and sevens?

35, 70

Jump and find the answers. Write โYesโ or โNoโ.

Make a number line on the ground and jump on it.

**Answer : **

A. If you start from 10 and jump counting in tens, will you land on number 100 at any time?

Ans : Yes.

B. Jump and find out if you start at 5 and count in fives, will you jump on number 40 at any time?

Ans : Yes

C. If you start from 0 and count in fives, will you jump on number 55 at any time?

Ans : Yes.

D. If you start from 4 and count in twos, will you jump on number 17 at any time?

Ans : No.

E. If you start from 13 and count in threes, will you jump on number 24 at any time?

Ans : No.

NCERT Class 2 Joyful-Mathematics Chapter 3 Fun with Numbers (Page 27)

**Let us jump backward.**

**Answer : **

NCERT Class 2 Joyful-Mathematics Chapter 3 Fun with Numbers (Page 28)

**Let us Talk **

**A. Rizwan is counting numbers from 20 onwards. Will he say the number 19 in his count? Explain why?**

**Answer : **

No. because 19 is less than 20.

**B. Chavi is counting numbers in twos from 10 onwards. Will she say 43? Explain why?**

**Answer : **

No, when counting numbers in twos from 10 onwards, the next number after 10 would be 12, then 14, 16, 18, 20, and so on. This pattern continues, incrementing by 2 each time. Therefore, when counting in twos, the number after 42 would be 44, not 43.

C. Mala is counting backwards from 20. How many steps will it take to reach 0? Explain why?

**Answer : **

To count backward from 20 to 0, Mala would need to take 20 steps.

D. Viraaj is counting backwards in twos from 20. How many steps will it take to reach 0? Discuss

**Answer : **10 steps

If Viraaj is counting backward in twos from 20, he would skip every other number as he counts down. Starting from 20, the sequence would be 20, 18, 16, 14, 12, 10, 8, 6, 4, 2, and then 0.

To find out how many steps it takes for Viraaj to reach 0, we can observe that he’s essentially counting down from 10, since every step in the sequence represents a decrement of 2. So, he would need 10 steps to reach 0.

Each step represents skipping one number in the sequence, but since he’s counting backward in twos, he’s effectively counting down from 10, resulting in 10 steps to reach 0.

**Patterns in Number Chart**

NCERT Class 2 Joyful-Mathematics Chapter 3 Fun with Numbers (Page 29)

**Let us Do**

Look at the number chart and write down the answers.

**Answer : **

Do you see any pattern? Shade the numbers on the number chart. Does the pattern continue for other numbers? If yes, write the pattern.** , **,

**,**

*,***,**

*,***,**

*,*

*,*Now, look at the numbers coloured green in the number chart. Write them.

1, 12, 23,

**,**

*,***,**

*,***,**

*,**__*

What pattern do you notice? Discuss

**Answer : **

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