Math
If the ratio of boys to girls is 3:2 and there are 15 boys, how many girls are there?
10 girls
This continent is also a country.
Australia
This president wrote the Declaration of Independence.
Thomas Jefferson
This marine mammal is the largest animal to ever live on Earth
Blue Whale
Dust in your house is particularly made of these tiny pieces from your body
A recipe uses 2 cups of flour for 12 cookies. Hoe many cups are needed for 30 cookies?
5 Cups
This ocean is the smallest and surrounds the North Pole
Arctic Ocean
This president led the United States during the civil War.
Abraham Lincoln
This bird is the national bird of the United States
Bald eagle
You should wash your hands for at least this many seconds
20 sec
A rectangle has a perimeter 26. The length is 8. What is the width?
W=5
This country is the largest by land area in the world
Russia
This document declared the colonies‘ independence from Britain in 1776.
United States Declaration of Independence
This mammal uses echolocation to find food in the ocean
Dolphin
Doctors recommend kids get at least this much time of physical activity each day.
60 min
A circle has a radius 4. What is the diameter?
D=8
A high piece of land with steep sides and a flat top.
Plateau
These explorers led an expedition across the western United States after the Louisiana Purchase.
Meriwether Lewis and William Clark
This animal cab regenerate (regrow) its arms if they are lost
Starfish
Your body produces about 1-2 liters of this liquid everyday.
Saliva
A train travels 180 miles in 3 hours. At this constant speed, how far will it travel in 5 hours?
300 miles
This river forms part of the border between the United States and Mexico.
Rio Grande
This law helped people move west by giving lands to settlers in 1862
Homestead Act
This mammal is the only one capable of true flight.
Bat
These hard structures protect your brain and other organs