Fractions of Shapes
Maths: Year 3 & 4 National Curriculum, topic 1.4.5
Fraction of Shapes and Objects
We can work out parts of shapes and objects as a fraction of the whole thing.
Pizza
- Imagine a pizza has been cut into 10 equal slices.
- You eat 3 of those slices.
- So you have eaten 3 out of the 10 slices.
- That means you have eaten 3/10 (three tenths) of the pizza.
Chocolate bar
- Imagine a bar of chocolate with 12 equal pieces.
- You give 6 of them to a friend.
- You have given them 6 out of the 12.
- So you have given them 6/12 (six twelfths) of the bar.
- You may notice that 6/12 pieces is also half of all the pieces.
- So you have given half of the chocolate bar to a friend.
School children
- There are 8 children in a group at school.
- 5 of the children are boys and 3 are girls.
- The fraction of children in the group who are boys is 5/8.
- The fraction of children in the group who are girls is 3/8.
School children
- Together the fraction that are boys and girls make is:
- 5/8 + 3/8 = 8/8
- 8/8 is eight out of eight, so 8/8 is the fraction represents the whole group.
Test yourself on Fractions of Shapes
There are 6 ice lollies in a pack. If you eat 5 in one day, what fraction of the pack did you eat?
Ellen reads 10 books, and she has 13 books on her bookshelf.
What fraction of books did she read?