Conversions 101
How many centimeters are in 2 meters?
What is 200 centimeters?
$100 What metric unit would you use to measure the mass of a textbook?
What is a kilogram?
$100 A swimming pool holds 25,000 liters of water. How many kiloliters is that?
What is 25 kiloliters?
$100 In 2025, NASA is planning to launch the Europa Clipper mission to explore what moon?
What is Europa, a moon of Jupiter?
You have 2.5 liters of juice. How many milliliters is that?
What is 2,500 milliliters?
Convert 5,000 milliliters to liters.
What is 5 liters?
$200 What unit would you use to measure the length of a pencil?
What is a centimeter?
$200 A newborn baby weighs 3,200 grams. What is that in kilograms?
What is 3.2 kilograms?
n 2025, researchers used the metric system to weigh the heaviest animal ever recorded — a blue whale. What metric unit would scientists most likely use to record its mass?
What is metric tons?
Convert 3.6 kilometers to meters.
What is 3,600 meters?
A car is 3.5 meters long. How many millimeters is that?
What is 3,500 millimeters
$300 You want to measure the volume of a can of soda. What unit?
What is a milliliter (or liter)?
$300 A marathon is 42.195 kilometers. How many meters is that?
What is 42,195 meters?
$300 The Arctic sea ice extent in 2025 reached its lowest point ever recorded. What metric unit measures its area?
What is square kilometers?
A lab sample weighs 0.045 kilograms. How many grams is that?
What is 45 grams?
How many kilograms are in 2,500 grams?
What is 2.5 kilograms?
$400 You're tracking how far you ran in a 10K race. What unit do you use?
What is kilometers?
$400 A bottle of water has 0.75 liters. How many milliliters is that?
What is 750 milliliters?
$400 Scientists in 2025 created a room-temperature superconductor at 21°C. What metric unit is used to measure temperature in science?
: What is Celsius (or Kelvin in advanced contexts)?
A race is 1,500 meters long. How many kilometers is that?
What is 1.5 kilometers?
Convert 120 centimeters to meters.
What is 1.2 meters?
$500 You need to measure the diameter of a virus. Which tiny unit would you use?
What is a nanometer or micrometer?
$500 A smartphone is 0.008 meters thick. What is that in millimeters?
What is 8 millimeters?
$500 The James Webb Space Telescope captured a galaxy 13.4 billion light-years away. What metric unit measures the size of galaxies?
What is light-years is typical, but kilometers can be used (very large numbers!)
A scientific instrument measures thickness at 0.00078 meters. Convert this to millimeters.
What is 0.78 millimeters?