Powers of ten and scientific notation
Grade 7 Math Worksheet - Building Confidence
Circle the best answer, or write your answer on the line.
The school library has 10^4 books, and Bo has read the shortest one. How many books are in the library?
The zoo had 10^5 visitors this summer, and Esme waved at the penguins. How many visitors came?
10^-2 = 1 ÷ (10 × 10): a 1 on top and 2 tens below the bar. A bee is about 10^-2 m long, and Jun measured it before it flew away. How many meters is that, written as a decimal?
10^-3 = 1 ÷ (10 × 10 × 10): a 1 on top and 3 tens below the bar. A coin is about 10^-3 m thick. Kira stacked a few and they wobbled. How many meters is that, written as a decimal?
Read this first
Use this
10^-4 = 1 ÷ (10 × 10 × 10 × 10): a 1 on top and 4 tens below the bar.
A sheet of paper is about 10^-4 m thick, and Luz is not impressed. How many meters is that, written as a decimal?
The city bus line carries 6 × 10^3 riders each day, and Pia rides one of them. How many riders is that?
A garden snail is about 6 × 10^-2 m long, and Ren watched it cross one leaf. How many meters is that, written as a decimal?
Use this
2 × 10^-3 = 2 ÷ (10 × 10 × 10): a 2 on top and 3 tens below the bar.
The lead in Tala's pencil is about 2 × 10^-3 m wide, and it snaps when pressed hard. How many meters is that, written as a decimal?
Use this
5 × 10^-4 = 5 ÷ (10 × 10 × 10 × 10): a 5 on top and 4 tens below the bar.
Zee's pen draws a line about 5 × 10^-4 m wide, and the ink is running low. How many meters is that, written as a decimal?
Bo's math book shows three numbers, with the strips of tens drawn for each. Which number is the greatest?
- 3 × 10^4
- 6 × 10^3
- 8 × 10^2