unit 4 review irrational numbers

HOUSEKEEPINGLast week you should have completed the lessons in the irrational numbers folder.

Today is a review session and the short summative will be scheduled in the system for tomorrow.

HOUSEKEEPINGHow many medals have you earned in IXL?

D.1 – Identify Rational and Irrational NumbersA.6 – Convert Between Repeating Decimals and Fractions (Algebra 1)F.15 – Estimate Positive and Negative Square Roots

Khan Academy Practice

Unit 4 Review:IRRATIONAL Numbers

Unit 4 –IRRATIONAL Numbers

Standard: Use rational approximations of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line diagram, and estimate the value of expressions

Essential SkillsBy the end of the unit, you must be able to……• Demonstrate locating irrational numbers (using rational

approximations) on a number line • Apply the process of converting a decimal expansion which

repeats into a rational number • Apply knowledge of rational approximations to compare the size

of irrational numbers • Apply knowledge of rational approximations to estimate the

value of expressions

Question 1:

True or False:

All whole numbers are rational numbers.

Real Numbers

Integers

Whole Numbers

Natural Numbers

Rational Numbers

Integers

Whole Numbers

Natural Numbers

Irrational Numbers

Question 2:

True or False:

All non-terminating decimals are irrational numbers.

Question 3:Which of the following are NOT rational?

A. 1/3B. -2C. 0.4444444

Question 4:WITHOUT A CALCULATOR!!!!What two integers does fall in between?

A. 7 and 8B. 49 and 64C. 57 and 59D. 8 and 9

Perfect SquaresThe perfect squares are the squares of the whole numbers: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100 … The square root of a number, n, written.

Question 5:Which of the following numbers is the closest estimate for the expression +

A. 65B. 12C. 11D. 30

Question 6:Give an example of an irrational number. (Do NOT use )

Question 7:

Put these numbers in order from least to greatest, using the formats given.

, -5, 4.25

Question 8:

Give an example to show that this statement is false.

“All rational numbers are integers”

Question 9:Estimate the value of the expression:

Goal for today….

GoalReview the learning targets for the current unit

Agenda Review Standard Practice!

What should you do now? Questions????? Review each lessonPractice the IXL skills