
The main questions in Sharing and Measuring Class 4 focus on dividing a whole into equal parts and understanding the fraction represented by each part.
Question: Which is greater: one-half or two-quarters of the same whole?
Answer: They are equal.
12=24\frac{1}{2}=\frac{2}{4}
So, one-half and two-quarters represent the same amount.
Question: How can you check whether a whole has been divided equally?
Answer: Fold or compare the parts to check whether they are the same size. Equal parts are needed to represent a fraction correctly.
When the same whole is shared among more people, each person gets a smaller share.
For example:
2 people → each gets 1/2
3 people → each gets 1/3
4 people → each gets 1/4
5 people → each gets 1/5
Therefore,
12>13>14>15\frac{1}{2}>\frac{1}{3}>\frac{1}{4}>\frac{1}{5}
This is one of the main ideas developed in the chapter.
The chapter uses sharing food to show how the size of a share changes.
If a whole is shared equally among 6 people, each person gets:
16\frac{1}{6}
If the same whole is shared among 8 people, each person gets:
18\frac{1}{8}
Since
16>18\frac{1}{6}>\frac{1}{8}
the share is larger when the whole is divided among 6 people.
If one whole is divided into equal parts:
2 pieces of 1/2 make 1 whole.
4 pieces of 1/4 make 1 whole.
5 pieces of 1/5 make 1 whole.
6 pieces of 1/6 make 1 whole.
10 pieces of 1/10 make 1 whole.
For example:
5×15=15\times\frac{1}{5}=1
Read More : NCERT Solutions for Class 4 Maths Chapter 4 Thousands Around Us
Answer: 1/4 is greater than 1/5 because the whole is divided into fewer equal parts.
14>15\frac{1}{4}>\frac{1}{5}
Answer: 1/6 is greater than 1/9.
16>19\frac{1}{6}>\frac{1}{9}
Answer:
18+18=28=14\frac{1}{8}+\frac{1}{8}=\frac{2}{8}=\frac{1}{4}
So, two pieces of 1/8 make 1/4.
Answer: Yes.
23>12\frac{2}{3}>\frac{1}{2}
Answer:
16÷4=416\div4=4
So, one-fourth of 16 barfis is 4 barfis.
One of two equal parts is called a ______.
One of four equal parts is called a ______.
Two quarters are equal to ______ half.
Five pieces of 1/5 make ______ whole.
Which is greater: 1/4 or 1/5? ______
Which is greater: 1/6 or 1/8? ______
Two pieces of 1/8 make ______.
One-fourth of 12 is ______.
Half
Quarter
One
One
1/4
1/6
1/4
3
A whole is something complete. When a whole is divided into equal parts, each part can be represented by a fraction.
For example:
1 out of 2 equal parts = 1/2
1 out of 4 equal parts = 1/4
1 out of 5 equal parts = 1/5
The parts must be equal for the fraction to represent the whole correctly. The chapter uses paper-folding and other activities to help students recognise equal parts.
When comparing unit fractions such as 1/2, 1/3, 1/4 and 1/5, the fraction with the smaller denominator has the larger share, provided the fractions represent parts of the same whole.
For example:
12>13\frac{1}{2}>\frac{1}{3}
and
13>14\frac{1}{3}>\frac{1}{4}
So,
12>13>14\frac{1}{2}>\frac{1}{3}>\frac{1}{4}
The reason is simple: dividing the same whole into more equal parts makes each individual part smaller.
Read More : NCERT Solutions for Class 4 Maths Chapter 4 Thousands Around Us
Fractions can also describe a part of a group of objects.
For example, suppose there are 12 cookies.
If 2 children share them equally, each gets 6 cookies, or 1/2 of the total.
If 3 children share them equally, each gets 4 cookies, or 1/3.
If 4 children share them equally, each gets 3 cookies, or 1/4.
If 6 children share them equally, each gets 2 cookies, or 1/6.
This connects equal sharing with fractions.
Different fractions can represent the same amount.
For example:
12=24\frac{1}{2}=\frac{2}{4}
Similarly,
13=26\frac{1}{3}=\frac{2}{6}
The chapter uses folding and fraction activities to help students see how one fraction can be represented in different forms.
Fractions are used when we:
Share food equally.
Divide a paper into equal parts.
Divide a group of objects.
Measure part of an object.
Share a pizza, dosa, cake, or chocolate.
Describe a part of a garden or collection.
The chapter connects these everyday situations with fractions so students can understand the idea of equal parts more clearly.
A whole can be divided into equal parts.
One of two equal parts is 1/2, or one-half.
One of four equal parts is 1/4, or one-quarter.
Two quarters are equal to one-half.
More people sharing the same whole means a smaller share for each person.
1/2 is greater than 1/4.
1/4 is greater than 1/5.
Two 1/8 pieces make 1/4.
Five 1/5 pieces make one whole.
Fractions can represent parts of a whole as well as parts of a group.
