8th Grade Math Midterm Review C

Front

What is scientific notation?

Back

A way of expressing numbers that are too large or too small to be conveniently written in decimal form, using powers of ten.

Front

How do you convert micrograms to grams?

Back

Multiply the number of micrograms by 1 x 10^-6.

Front

What is the combined mass of 5x10^3 paper clips, each weighing 8x10^-4 kilograms?

Back

4 kilograms.

Front

If a substance has a mass of 8 x 10^9 micrograms, what is its mass in grams?

Back

8x10^3 grams.

Front

What is a system of equations?

Back

A set of two or more equations with the same variables.

Front

How do you solve a system of equations using substitution?

Back

Solve one equation for one variable and substitute that expression into the other equation.

Front

What is the square root of a number?

Back

A value that, when multiplied by itself, gives the original number.

Front

Between which two integers does the square root of 77 fall?

Back

8 and 9.

Front

What is the formula for calculating the time taken for multiple tasks?

Back

Use a system of equations to represent the relationships between tasks and their times.

Front

How do you find the average of a set of numbers?

Back

Add all the numbers together and divide by the count of numbers.