Open Up - Grade 8 - Mathematics - Unit 7 - Lesson 13

Write each number in scientific notation.

14,700

Write each number in scientific notation.

0.00083

Write each number in scientific notation.

760,000,000

Write each number in scientific notation.

0.038

Write each number in scientific notation.

0.38

Write each number in scientific notation.

3.8

Write each number in scientific notation.

3,800,000,000,000

Write each number in scientific notation.

0.0000000009

Perform the following calculations. Express your answers in scientific notation.

(2⋅10^{5})+(6⋅10^{5})

Perform the following calculations. Express your answers in scientific notation.

(4.1⋅10^{7})⋅2

Perform the following calculations. Express your answers in scientific notation.

(1.5⋅10^{11})⋅3

Perform the following calculations. Express your answers in scientific notation.

(3⋅10^{3})^{2}

Perform the following calculations. Express your answers in scientific notation.

(9⋅10^{6})⋅(3⋅10^{6})

Jada is making a scale model of the solar system. The distance from Earth to the moon is about 2.389⋅10^{5} miles. The distance from Earth to the sun is about 9.296⋅10^{7} miles. She decides to put Earth on one corner of her dresser and the moon on another corner, about a foot away. Where should she put the sun?

Here is the graph for one equation in a system of equations.

Write a second equation for the system so it has infinitely many solutions.

Here is the graph for one equation in a system of equations.

Write a second equation whose graph goes through (0,2) so that the system has no solutions.

Here is the graph for one equation in a system of equations.

Write a second equation whose graph goes through (2,2) so that the system has one solution at (4,3).