Grade 8 Math: Standard Form
Practice converting numbers to and from standard form, performing operations, and comparing numbers in standard form.
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Grade 8 Math: Standard Form
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Read each question carefully and follow the instructions. Show your work where applicable.
Convert the following numbers to standard form (scientific notation).
1. 3,450,000,000 =
2. 0.00000000087 =
3. 67,800,000 =
4. 0.000000502 =
Convert the following numbers from standard form to ordinary numbers.
1. 5.6 x 10^7 =
2. 9.01 x 10^-5 =
3. 1.234 x 10^10 =
4. 7.8 x 10^-3 =
1. Which of the following is equivalent to 4.5 x 10^-4?
45,000
0.00045
0.0045
4500
2. The approximate mass of Earth is 5.972 x 10^24 kg. Which number represents this mass?
5,972,000,000,000,000,000
59,720,000,000,000,000,000,000,000
5,972,000,000,000,000,000,000,000
5,972,000,000,000,000,000,000,000,000
Solve the following problems, expressing your answers in standard form.
1. (2.5 x 10^3) x (3 x 10^5)
2. (8.4 x 10^9) / (2.1 x 10^4)
3. The population of City A is 1.5 x 10^6 people, and the population of City B is 7.5 x 10^5 people. What is the total population of both cities?
Determine if the following statements are true or false.
1. 3.0 x 10^-2 is greater than 3.0 x 10^-3.
True
False
2. The number 1,230,000 can be written as 1.23 x 10^5 in standard form.
True
False