Exercise #1
Name___________________________________
1 dollar = 4 quarters = 10 dimes = 20 nickels = 100 pennies
1) How many quarters are in $10.50? How many dimes? How many nickels? How many
pennies?
Use the same type of logic with distance.
1 kilometer = 1,000 meters = 100,000 centimeters = 1,000,000 millimeters
2) How many meters are in 10.5 km? How many centimeters are in 10.5 km? How many
millimeters are in 10.5 km?
3) How many kilometers are there in 100 meters? How many centimeters are in 100
meters? How many millimeters are in 100 meters?
1 kilometer = 5/8 mile
4) How many kilometers are there in one mile? How many meters are in one mile?
5) How many kilometers are there in 10 miles? How many meters are in 10 miles?
6) Framingham State University is 20 miles from Boston. How many kilometers is this?
How many meters?
Exercise #1
7) Framingham State University is approximately 0.3 miles from one end of campus to the
other. How many kilometers is this? How many meters?
1 kilogram = 1,000 grams = 2.2 pounds
8) A car weighs 6,000 pounds on Earth. How many kilograms is this?
9) A quarter has a mass of 5.67 grams. How many kilograms is this?
10) A book has a mass of 2.8 kilograms. How many grams is this? How many pounds is this
on the surface of the Earth?
speed = distance/time
11) What is time equal to in terms of speed and distance?
12) What is distance equal to in terms of speed and time?
13) A plane travels 3,000 meters in 10 seconds. What is its speed? Make sure you use units.
Exercise #1
14) A car travels 3 km in 100 seconds. What is its speed? Make sure you use units.
15) A car has a speed of 30 km/hour. How many kilometers will it travel in two hours?
16) A car has a speed of 100 km/hour. How far will the car travel in 10 minutes?
17) A photon of light travels at a speed of 3 x 108 m/s. (A photon is a particle of light.) How
long will it take the photon travel 1 meter? How long will it take the photon of light to
travel 1 km?
18) The Sun is 1.49 x 1011 meters from the Earth. How long will it take a photon of light to
travel from the Sun to the Earth? The speed of light is given in question #17.
19) A light-year is the distance that light travels in a year. How far in meters will light travel
in a year? The speed of light is given in question #17. You need to convert the time to
seconds. (The closest star is 4.2 light years away.)
20) Sam says he can walk at a speed of 1 m/s. John says he can walk at a speed of 4
miles/hour. Who can walk faster?
Exercise #1
density = mass/volume
21) What is mass equal to in terms of density and volume?
22) What is volume equal to in terms of density and mass?
23) The mass of an object is 80 grams. Its volume is 5 cm3. What is its density?
24) What is 4 x 105 times 2 x 109?
25) What is 2 x 104 divided by 4 x 109?