Tuesday, October 11 th

Tuesday, October 11th

• Please write down Homework and complete Warm UP

1. Start with 1 and add 3 to 4 times the numbers. What will the 3rd number in the sequence be?

2. Simplify 3 + 10 - 24 ÷ 4 +9

Warm Up

Corny Joke of the Day

What did one mountain say to the other after the

earthquake?

“It isn’t my fault”

Schedule for the Week

Today: Review Data Test Answers, Prime vs. Composite and divisibilityWednesday: Prime FactorizationThursday: Prime FactorizationFriday: Review and Quiz. WEEKLY

REVIEW DUE

Data test answers

Great job everyone!

Congrats to our Test Toppers

Clean out Binders

I NEED YOU TO PLEASE LISTEN

CAREFULLY

Keep in your Binders Warm UpsGoal Sheet SyllabusWeekly ReviewsTabs Unused paper

Throw away or take home

EVERYTHING ELSE

Syllabus for Qtr. 2

Please take home and get it signed by your parents

Unit #1Number Sense

Divisibility, Prime Factorization, GCF, and LCM

1,407 or 2,303

Are the numbers PRIME or COMPOSITE

and why

Question of the Day

Task #1 Prime vs. Composite

Snap Cube Discovery

At your tables you will find snap cubes, please be respectful of these

fun math manipulatives! Review: ARRAY=rectangle Each person will complete the table on

the back Let’s do it together!

Discussion#1 For which numbers can you

make only one array? These are our prime For instance, 3 is prime since only one

array can be made #2 For which numbers can you

make more than 1 array? These are our composite For instance, 4 is composite Since more than one array can be

made.

What about 1 and 2??

1 is it prime or composite?

2 is it prime or composite?

NOTHING

Prime

Prime

A Prime number is a number that has exactly 2

factors-1 and itself

*2 is prime

Composite

A Composite Number is a number that has more than 2 factors.

The number 1 is neither prime nor composite

1,407 or 2,303

Are the numbers PRIME or COMPOSITE

and why

Question of the Day

You need to use…..

DIVISIBILITY

Vocab word #1 DIVISIBILITY

a number is divisible by

another if you can divide it and the quotient is a whole number

Rules of DivisibilityDivisibility Rules

A number is divisible by. . . Divisible Not Divisible

2 if the last digit is even (0, 2, 4, 6, or 8). 3,978 4,975

3 if the sum of the digits is divisible by 3. 315 139

4 if the last two digits form a number divisible by 4.

8,512 7,518

5 if the last digit is 0 or 5. 14,975 10,978

6 if the number is divisible by both 2 and 3 48 20

9 if the sum of the digits is divisible by 9. 711 93

10 if the last digit is 0. 15,990 10,536

Tell whether 462 is divisible by 2, 3, 4, and 5

2

3

4

5 Not divisible

So 462 is divisible by 2 and 3.

The last digit, 2, is even.

The sum of the digits is 4 + 6 + 2 = 12. 12 is divisible by 3.

The last two digits form the number 62. 62 is not divisible by 4.

Divisible

Divisible

Not divisible

The last digit is 2.

You try!

Tell whether 540 is divisible by 6, 9, and 10

6

9

10

So 540 is divisible by 6, 9, and 10

The number is divisible by both 2 and 3.

The sum of the digits is 5 + 4 + 0 = 9. 9 is divisible by 9.

The last digit is 0.

Divisible

Divisible

Divisible

You try!

Finding the Missing Digit

1. Create a number that is divisible by 2 AND 5 32,07__

2. Create a number that is divisible by 4 and 6 26,95____

3. Create a number that is divisible by 8 and 9123,98______

Work on this with your groups. When you think you have the answers raise your hand & then help

others around you

1,407 or 2,303

Are the numbers PRIME or COMPOSITE

and why

Question of the Day

Can you answer this now?

1,407 or 2,303

Which one is prime? How do you know?