Rational Numbers and Equations

Rational Numbers and Equations

Assessment

Flashcard

Mathematics

8th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

2.

FLASHCARD QUESTION

Front

What is the volume of a cube with edge length 'a'?

Back

The volume of a cube is calculated using the formula V = a³, where 'a' is the length of one edge.

3.

FLASHCARD QUESTION

Front

How do you solve the equation -0.2(x - 20) = 44 - x?

Back

To solve, distribute -0.2, combine like terms, and isolate x. The solution is x = 50.

4.

FLASHCARD QUESTION

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating.

5.

FLASHCARD QUESTION

Front

How do you estimate a population to the nearest ten million?

Back

Round the population number to the nearest multiple of ten million.

6.

FLASHCARD QUESTION

Front

What is scientific notation?

Back

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

7.

FLASHCARD QUESTION

Front

Convert 0.0000000345 to scientific notation.

Back

3.45 × 10^-8.

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