Choose the correct word: The ___ is important for all living things.

21+33=___

Choose the word that is spelled correctly: An easy way to tell time is by looking at a _____.

Eating fruits and vegetables everyday helps us stay healthy.

68-57=

What is the largest 3-digit number?

Which is the largest continent on Earth?

27 $$\div$$  3=

People should _______ the natural environment.