Guess who!
Mathematics
Science
100

How many nickels does it take to make a quarter?

Five

100

What elements does a plant need to grow?

Sunlight, water, and Carbon dioxide

200

67+45=

112

200

What is the name of gas in the air?

Oxygen

300

Does water evaporate?

Yes

400

Harriet  Tubman

400

82-64=

18

400

Roots

500

136-128=

8

500

Can oil dissolve in the water?

No