Unit 1: Review (Math 8)

Irrational Number

a decimal number that is non-repeating and non-terminating

Rational Number

a decimal number that terminates and is repeating

Set

a list of related things

Scientific Notation

a method of expressing a quantity as a number multiplied by 10 to the appropriate power

Square Root

a number that when multiplied by itself equals a given number

subset

a part of a larger group of related things

What are you finding when you square a numbers?

area

Which of the following is true?

The set of irrational numbers does not contain any natural numbers.

Integers

The set of whole numbers and their opposites

Whole Numbers

Natural numbers ( counting numbers) and zero; 0, 1, 2, 3...

Write 2.9 x 10^-5 in standard notation.

0.000029

Which of the following is a rational numbers?

0.2727...

Write 0.00000001379 in scientific notation.

1.379 x 10^-8

Write 137,900,000 in scientific notation.

1.379 x 10^8

Write 2.9 x 10^5

290,000

What is the best estimate of the square root of 199?

A number between 14 and 15.

What is the best estimate of the square root of 119?

A number greater than 10.5 but less than 11.

Which point on the numberline best represents the square root of 57?

Q

Which point on the numberline best represents the square root of 75?

R

Which of the following is false?

Rational numbers are a subset of integers.

What are you finding when you square root a number?

side length