Add and Subtract Fractions

To All January Birthday Kiddos!!!!!

Big image

ARCADEMIC CUP PRACTICE

PRACTICE GRAND PRIX MULTIPLICATION UNTIL THE TIMER GOES OFF

Thursday, January 26, 2017

Addition With Unlike Denominators Lesson 6.1

Common Core Standard - CC.5. NF.2

Use equal fractions as a strategy to add fractions.

YOU WILL NEED

PAGE 245 FROM TEXTBOOK


P121 FROM THE ASSIGNMENT BOOK


PENCIL

LEAST COMMON DENOMINATOR

First Trick to Adding Unlike Denominators

Look at the SMALLEST denominator and ask "Can I get the LARGER DENOMINATOR IF I MULTIPLY?"

EXAMPLES OF TRICK 1

2/8 + 1/4


4/5 + 1/15

Second Trick to Adding with Unlike Denominators

Find the LEAST COMMOM DENOMINATOR (LCD).



To find the least common denominator, simply list the multiples of each denominator (multiply by 2, 3, 4, etc. out to about 6 or seven usually works) then look for the smallest number that appears in each list.

Example: Suppose we wanted to add 1/5 + 1/6 + 1/15. We would find the least common denominator as follows…

  • First we list the multiples of each denominator.
    Multiples of 5 are 10, 15, 20, 25, 30, 35, 40,…
    Multiples of 6 are 12, 18, 24, 30, 36, 42, 48,…
    Multiples of 15 are 30, 45, 60, 75, 90,….
  • Now, when you look at the list of multiples, you can see that 30 is the smallest number that appears in each list.
  • Therefore, the least common denominator of 1/5, 1/6 and 1/15 is 30.

3rd Trick to Adding with Unlike Denominators

Multiply the two denominators together.

Examples of Trick 3

3/4 + 2/3


1/2 + 3/5

Adding With Unlike Denominators

YOU DO

Watch ONLY THE VIDEO PORTION of the ThinkCentral assignment below.

WE DO

WORK PROBLEMS FROM PAGE 245 IN THE TEXTBOOK TOGETHER.

YOU DO - ASSIGNMENT

P121 FROM ASSIGNMENT BOOK

REDUCING FRACTIONS

STEPS TO REDUCING FRACTIONS

EXAMPLE - 6/12 = 1/2


1. ASK YOURSELF "IS THE NUMERATOR HALF OF THE DENOMINATOR.

IF "YES" THE FRACTION WILL REDUCE TO 1/2.


EXAMPLE - 4/12 = 1/3


2. ASK YOURSELF IF THE NUMERATOR WILL DIVIDE INTO THE DENOMINATOR.

IF "YES" DIVIDE BOTH THE NUMERATOR AND DENOMINATOR BY THAT NUMBER.


4 4 1

12 4 3


EXAMPLE - 6/8 = 3/4


3. IF 1 & 2 DO NOT WORK THEN YOU HAVE TO FIND THE "GREATEST COMMON FACTOR" THAT WILL GO INTO THE NUMERATOR AND DENOMINATOR.


6 2 3

8 2 4

FRIDAY, JANUARY 27, 2017

LET'S BEGIN WITH "KAHOOT"

CLICK THE KAHOOT LINK BELOW.

WE DO - REVIEW/PRACTICE ADDING FRACTIONS/IMPROPER FRACTIONS

LABEL YOUR PAPER:

NAME

MATH BLOCK _____

IXL ADD FRACTIONS WITH UNLIKE DENOMINATORS

JANUARY 27, 2017


LOG IN TO "IXL".


GO TO 5TH GRADE. FIND L8 - ADDING FRACTIONS WITH UNLIKE DENOMINATORS


LISTEN FOR DIRECTIONS

YOU DO

PRACTICE FRACTIONS WITH THE FRUIT SHOOT/SNOWBALL GAMES BELOW.

MONDAY, JANUARY 30, 2017

Catch up and Review

TUESDAY, JANUARY 31, 2017

REVIEW REDUCING FRACTIONS

CLICK THE "KAHOOT" BUTTON BELOW AND LET'S PRACTICE REDUCING FRACTIONS

PRACTICE, PRACTICE, PRACTICE

LOG IN TO "IXL" and WORK THE FOLLOWING TOPICS UNTIL YOU RECEIVE A CERTIFICATE. I WILL SUPPLY THE PAPER.


LABEL YOUR PAPER - NAME, MATH BLOCK _____, IXL FRACTIONS REVIEW, JAN. 31, 2017


K4 - REDUCING FRACTIONS - EVEN IF YOU CAN ANSWER IN YOUR HEAD WRITE THE PROBLEM/ANSWER ON PAPER. :-) NUMBER EACH PROBLEM.


L10 - SUBTRACTING FRACTIONS - WRITE ALL PROBLEMS/ANSWERS ON PAPER. NUMBER EACH PROBLEM.

FINISHED WHAT NOW?????

IF YOU FINISH BEFORE CLASS IS OVER YOU CAN EXPLORE THE FRACTIONS GAMES BELOW QUIETLY!!!!!!!!!!!!!!!


OR


READ A.R. and TEST QUIETLY!!!!!!!!!!!!!!!!!!!!!!!

WEDNESDAY, FEBRUARY 1, 2017

Catch Up and Clean Out

TAKE OUT ANY MAKE-UP WORK OR ASSIGNMENTS THAT NEED TO BE TURNED IN.


HOLD ON TO THEM UNTIL I ASK FOR THEM.

Quiz Time

You will need Paper.


Wait for directions.

Let's Learn Time

You will need:


Textbook Pages 260-261


Assignment Book Pages P129-P130


Paper


Pencil

We Will Practice/Learn Together

We will use Textbook Pages 260-261 to practice finding LCD and learn how to change an Improper Fraction.


We will work the ODD problems together on paper.

Partner Time Practice/Learn

You will work the EVEN problems on pages 260-261 and check your answers with your partner.

On Your Own Time Practice/Learn

You will work Assignment Pages P129-P130 on your own.


It will be due tomorrow.

I Am Finished..........What Can I Do?

You may play the Fraction Games below


Read and test A.R.


Practice for the Arcademic Cup

Thursday Feb. 2 and Friday Feb. 3, 2017

ARCADEMICS

We will practice our multiplication facts with Arcademic Cup. Let's WIN WIN WIN

BUTTONS YOU MIGHT NEED