FractionsStarter: Equivalent Fractions

This chocolate bar has been cut in halfIn how many ways can you write ½ using

different fractions?

What did you come up with?

24

816

48

1632

For each of the fractions below write 5 equivalent fractions

• ¼ __ __ __ __ __• ⅓ __ __ __ __ __• ⅕ __ __ __ __ __• ⅗ __ __ __ __ __• ⅝ __ __ __ __ __

• 1 2 3 4 5 6

4 8 12 16 20 24

• ⅓ __ __ __ __ __• ⅕ __ __ __ __ __• ⅗ __ __ __ __ __• ⅝ __ __ __ __ __

X 2

X 2

Cheese and tomato pizza

What fraction of the pizza has been eaten?

What fraction of the pizza is left over?

• How much more of the pizza has been eaten?

• What fraction of the pizza has been eaten in total?

• What fraction of the pizza is left?

Spicy chicken PizzaWhat fraction of the

pizza has been eaten?

What fraction of the pizza is left over?

• If I eat 4 slices of pizza...• What fraction of the

pizza has been eaten?• What fraction of the

pizza is left over?

- =

6 - 4 = 2 6 6 6

Adding fractions

+ =

2 + 3 = 5 6 6 6

• I have 2 slices of cheese and tomato pizza and 1 slice of spicy chicken pizza

• Can you write an addition sum to show what fraction of pizza I have in total?

What fraction of the cake has been eaten?

What fraction of the cake is left?

What fraction of the cake has been eaten?

What fraction of the cake is left?

I decide to wash up so I put the slice of chocolate cake on the same plate as the plain cake...

+ =

1 + 5 = ? 4 8

All the parts have to be the same size..

• 1 = 2 4 8

2 + 5 = 7 8 8 8

Plenary

• Adding Fractions Magic Square