Sem1 Exam Review Day 2 - Ch 4,5,6 Equations,Inequalities(Math 8)

Front

What is scientific notation?

Back

A way of expressing numbers as a product of a coefficient and a power of 10, e.g., 5.0 x 10^8.

Front

How do you compare numbers in scientific notation?

Back

Compare the coefficients and the exponents; the number with the larger exponent is greater.

Front

Convert 520,000,000 to scientific notation.

Back

5.2 x 10^8.

Front

What is the process for adding numbers in scientific notation?

Back

Make sure the exponents are the same, then add the coefficients.

Front

Convert 0.000457 to scientific notation.

Back

4.57 x 10^-4.

Front

What do you do with the exponents when multiplying in scientific notation?

Back

Add the exponents.

Front

What do you do with the exponents when dividing in scientific notation?

Back

Subtract the exponents.

Front

Solve the equation: -5x + 4x = 9.

Back

x = -9.

Front

What is an inequality?

Back

A mathematical statement that indicates one quantity is less than, greater than, or not equal to another.

Front

How do you solve a simple inequality?

Back

Isolate the variable on one side of the inequality.