1) When 's your sports day ?

It's in December

2)Why do you like a maths ?

Because I want to be a maths teacher 

3) Where were you last summer ?

I were in Syndey

4) What ' s favourite subject ?

It 's Vietnamese

1) Where were you last Saturday ?

I were on the beach

2) Can you ride a bike ?

No,l can ' t

3. How many buildings are at your school ?

There are three

3 phút 20 giây = 200 giây

1 dm2 54 cm2 > 145 cm2

105 dm2 < 1m2 50dm2

1 thế kỉ < 1 000 năm

a) Chữ số hàng  chục nghìn là : 5. Có giá trị là 50 000

b) Làm tròn là : 1 100 000