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one-third 1 (one-third) 1 (one-third)
3 3
When we divide a whole thing into

three equal parts, each part is called
1
one-third. We write one-third as .
3 1 (one-third)
Here, a pizza is cut into three equal 3
1 1
parts. Each part of pizza is one-third of the whole. We read as 1 upon 3 or 1 by 3.
3 3
Note that three one-thirds make a whole.

Practice time 7a

1. tick () the shapes that are divided into equal parts.

(a) (b) (c) (d) (e)

2. Colour one-half of each figure.

(a) (b) (c) (d) (e)

3. Colour one-third of each figure.

(a) (b) (c) (d) (e)

4. Draw a square and divide it into three equal parts. Mention which part represents
one-third.

one-fourth or quarter 1 1
4 (one-fourth) 4 (one-fourth)
When we divide a whole thing into
four equal parts, then each part is
called one-fourth or a quarter. We
1
write one-fourth as .
4
Here, an apple is cut into four equal
1
parts. Each part is one-fourth of 1 (one-fourth) 1 (one-fourth)
1 4 4 4
the whole. We read as 1 upon 4 or 1 by 4.
4

Note that four one-fourths make a whole.

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