Scientific notation: write, convert and say how many times larger
Grade 8 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.
A city library has about 10^5 books. Ari's class shelf has about 10^2. How many times as many is the first, as a single power of 10?
A lake holds about 10^9 liters of water. Esme's bathtub holds about 10^2 liters. How many times as many is the first, as a single power of 10?
A fraction bar. On top: 9 tens (10^9). Below: 2 tens (10^2). Each ten below cancels one on top. A fraction bar. On top: 9 tens (10^9). Below: 2 tens (10^2). Each ten below cancels one on top. On top: 9 tens (10^9) 10^9 10^9 10^9 10^9 10^9 10^9 10^9 10^9 10^9 Below: 2 tens (10^2) 10^2 10^2 Each ten below cancels one on top. About 3,900,000 people live in Jun's state. What is that, rounded to one digit times a power of 10?
Kira reads that the Moon is about 384,000 km from Earth. What is that, rounded to one digit times a power of 10?
Luz reads that a blue whale weighs about 150,000 kg. What is that, rounded to one digit times a power of 10?
Milo reads that about 7,800,000 people live in a big city. What is that, rounded to one digit times a power of 10?
Noah reads that a big oak tree has about 260,000 leaves. What is that, rounded to one digit times a power of 10?
Pia's town library has 18,600 books. What is that, rounded to one digit times a power of 10?
In Ren's science notes, a human hair is about 0.00008 m wide. What is that as one digit times a power of 10?
Tala reads that a pollen grain is about 0.000025 m across. What is that, rounded to one digit times a power of 10?