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100

The most abundant gas in Earth's atmosphere is this.

What is nitrogen?

100
123 - 97.
What is 26?
100
12.2 times 3.
What is 36.6?
100
Ko has $7.50 and buys food from McDonalds for $4.99. If tax is not charged how much does he have left?
What is $2.51 left?
200

These are the 5 vital organs of the human body.

What are the brain, heart, lung, kidney, and liver?

200
14.278 - 3.99 =
What is 10.288?
200
13 times 0.8.
What is 10.4?
200
Eric has $8.43, Josefina has $2 and Nahio has $3.11. How much money do they have combined?
What is $13.54 combined?
300

These are the colors of the Australian flag.

What are red, white, and blue?

300
125.09 - 78.91.
What is 46.18?
300
11.2 times 0.31.
What is 3.472?
300
Emily runs a mile in 6.5 minutes. How many miles can she run in 39 minutes?
What is 6 miles?
400

This continent contains the most countries.

What is Africa? (54)

400
$175.23 - $24.77.
What is $150.46?
400
25.7 times 3.2.
What is 82.24?
400
Candy costs $0.50 per pound. How much will Ms. Wright spend on 4.1 pounds?
What is $2.05?
500

This body part has the smallest bone in the body.

What is the ear? 

It’s called the stapes.

Fun Fact: The stapes is 0.012 by 0.009 inches.

500
478.2 - 29.834. Answer must be stated in verbal form.
What is (488.366) four hundred eighty-eight and three hundred sixty-six thousandths?
500
12.5 times 0.0009.
What is 0.01125?
500
Brandon has $20. He buys chocolate for $3.50, popcorn for $4.25, and a soda for $3.75. How much money, if any, does he have left?
What is $8.50?