Scientific Computations Worksheets Grade 8

1. A research satellite is traveling at a speed of 2.8 × 10⁴ kilometers per hour. If it needs to cover a distance of 1.68 × 10⁶ kilometers to reach its observation position, how many hours will the journey take?
2. A research satellite is traveling from Earth to Mars. The distance between the planets is approximately 5.46 × 10^7 kilometers. If the satellite travels at a constant speed of 6.5 × 10^4 kilometers per day, how many days will the journey take? Express your answer in scientific notation.
3. Mere's warehouse ships 4.8 × 10⁶ kilograms of rice per month. If each shipment weighs 6.0 × 10² kilograms, how many shipments are made each month?

…and 5 more problems

1. A rectangular solar panel array is arranged in a grid with 4 rows and 5 columns. Each panel measures 1.8 × 10² cm by 9 × 10¹ cm. If the panels are placed edge-to-edge with no gaps, what is the total area covered by the array in square centimeters? Express your answer in scientific notation.
2. A rectangular solar panel array is arranged in a grid pattern with 3.2 × 10² panels along the length and 1.5 × 10³ panels along the width. Each panel measures 1.6 meters by 0.8 meters. If the panels are placed edge-to-edge with no gaps, what is the total area covered by the array in square meters? Express your answer in scientific notation.
3. Emma's factory produces 3.5 × 10⁵ light bulbs per day. Each bulb requires 4.0 × 10⁻³ kg of glass. How many kilograms of glass are needed for 5 days of production?

…and 3 more problems

1. Hana's computer processes data at a rate of 2.4 × 10⁶ bytes per second. She needs to transfer a file of size 9.6 × 10¹⁰ bytes. How many seconds will the transfer take?
2. A star is 8.1 × 10¹⁶ meters from Earth. Light travels at 3.0 × 10⁸ m/s. How many seconds does it take for light from the star to reach Earth?
3. Noah's factory produces 7.2 × 10⁹ microchips per year. Each microchip has a mass of 8.5 × 10⁻⁶ grams. What is the total mass of microchips produced in one year?

…and 6 more problems