The length of a piece of chalk is about $8$  . $(\mathrm{kg}/\mathrm{cm})$

Fill in the blank with the correct unit.

A wall is about $3$ _____  (metre/ gram) long.

Fill in the blank with the correct unit.

A bicycle is about $2$ _____ long.

Fill in the blank with the correct unit.

An eraser is about $3$ _____ long.

Fill in the blank with the correct unit.

A pen is about $15$ _____ long.

Write the correct unit in the blank.

A piece of biscuit weighs about $10$ _____. $(\mathrm{g}/\mathrm{m})$

Write the correct unit in the blank.

A pencil weighs about $200$ _____.

Write the correct unit in the blank.

A lunch box roughly weighs about $200$ _____.

Write the correct unit in the blank.

A slice of bread weighs about $25$ _____.$(\mathrm{g}/ \mathrm{kg})$