Tính giá trị biểu thức:

a. \(3\dfrac{1}{2}+4\dfrac{5}{7}-5\dfrac{5}{14}\)

b. \(4\dfrac{1}{4}+\dfrac{33}{2}:5\dfrac{1}{2}\)

Chu vi hình bên là:

Diện tích bình bên là:

Sắp xếp các phân số sau theo thứ tự từ lớn đến bé:

\(\dfrac{6}{10};\dfrac{600}{666};\dfrac{6000}{66};\dfrac{6000}{6666}\)

Help! Mìn cần gấp!

Order the words to make sentences

last / band / The / practiced / song / the / Sunday / , / they / didn't / ?

Ghi lại những thành ngữ nói lên vẻ đẹp kì vĩ của thiên nhiên. Chọn hai thành ngữ, đặt câu với mỗi thành ngữ.

Các thành ngữ:

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Đặt câu:

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