Scientific Notation Worksheets Grade 7

1. Write 7,350,000 in scientific notation.
2. Lily is studying astronomy and learns that the distance from Earth to the Andromeda Galaxy is approximately 2.4 × 10^19 kilometers. If a space probe travels at a constant speed of 6 × 10^4 kilometers per hour, how many hours would it take to reach the Andromeda Galaxy? Express your answer in scientific notation.
3. A triangular prism is drawn with a right triangle base where the legs measure 6 cm and 8 cm, and the prism height is 15 cm. What is the volume of this prism in cubic centimeters?

…and 5 more problems

1. Lily is studying the solar system and learns that the distance from Earth to Mars is approximately 7.83 × 10^7 kilometers. If a spacecraft travels at a constant speed of 2.61 × 10^4 kilometers per hour, how many hours would it take to reach Mars? Express your answer in scientific notation.
2. A rectangular garden is drawn on a coordinate plane with vertices at (2, 1), (8, 1), (8, 5), and (2, 5). If each unit on the grid represents 3 meters in real life, what is the actual area of the garden in square meters?
3. Noah is learning about the populations of different countries. He finds that the population of Japan is approximately 1.26 × 10^8 people, and the population of Mexico is approximately 1.28 × 10^8 people. What is the combined population of Japan and Mexico? Express your answer in proper scientific notation.

…and 5 more problems

1. The Andromeda Galaxy is approximately 2.5 million light-years away from Earth. If one light-year equals 9.46 × 10^12 kilometers, what is the distance to Andromeda in kilometers? Express your answer in scientific notation.
2. (3.6 × 10⁴) × (2.5 × 10³) = ?
3. A scientist is studying bacteria growth and finds that a particular colony doubles every hour. After 24 hours, the colony has reached a population of 16,777,216 bacteria. Express this population in scientific notation.

…and 5 more problems