wednesday, october 26 th 26 th 11 th

Wednesday, October 26th 26th 11th

• Please take out your Math worksheet and complete warm up

• Did you write down your homework?!?!

1. Find the prime factorization of 91

2.Find the product of .033 x .02

Warm Up

Corny Joke of the Day

What did the first casket say to the second casket?

Is that you COFFIN?

Schedule for the Week

Remember…..

Checkpoint on Friday!

Retest? 75 and above you will

complete a packet 74 and below you are eligible

for a reteach Monday 10/31 will be the

reteach Wednesday 11/2 will be the

retest

Retest Qualifications All Homework must from

unit must be complete before you retake the test

Retest form Retake packet must be

complete before you retake the test

Homework AnswersCan you find my mistakes?

a.4/6 b. ¾ c. ½ d.¼ e.3/9f. 2/3 g.3/5 h.½ i. 2/12j. ½k. ¼

l. 2/3 m.4/5 n.3/6 o.6/8p.2/3 q.1/3r. 3/5 s. ½t. 6/12

What did mickey do wrong?

10 812 12

212

UNIT #2Fractions

+, -, x, and ÷

Todays MissionAdding and subtracting with unlike

denominators

How do we add when we don’t have common denominators?!?

1 32 4

Make EQUIVALENT Fractions!!!

Fractions that represent the same value are equivalent.

Remember!

To add or subtract unlike fractions, first rewrite them

as equivalent fractions with a common denominator.

• You can use any common denominator. But it will be easier to find the least common denominator to add and subtract unlike fractions.

• The least common denominator (LCD) is the least common multiple of the denominators.

How do we do this?

1 32 4

Practicing Equivalent Fractions

Make equivalent Fractions by finding the LCD

1. ½ and 1/8

2. 1/3 and 7/9

3. 5/10 and 9/12

4. 6/7 and ¾

Practicing Equivalent Fractions

Make equivalent Fractions by finding the LCD

1. ½ and 1/8

2. 1/3 and 7/9

3. 5/10 and 9/12

4. 6/7 and ¾

Time to + and -!!! Steps for unlike denominators

1. Find the LCD for the two denominators by looking for LCM

2. Make equivalent fractions by multiplying both the numerator and denominator by the same number (to get LCD)

3. Add the numerators, leave your denominator

4. If needed, simplify

1112__ 3

8__

–1112__ 3

8__

–2224__ 9

24__

Multiples of 8: 8, 16, 24, … The LCD is 24. Write equivalent fractions with a common denominator.

Subtract. 1324__

Multiples of 12: 12, 24, … -

Just Watch

47__ 1

3__

–47__ 1

3__

–1221__ 7

21__

Multiples of 3: 3, 6, 9, 12, 15, 18, 21, …The LCD is 21. Write equivalent fractions.

Subtract. 521__

Multiples of 7: 7, 14, 21, …

-

Let’s Try Together!

Add or subtract. Write each answer in simplest form.

1. + 2. –

3. – 4. +

5. Bonnie is making oatmeal bars and the recipes calls for cup of brown sugar. If she has cup of brown sugar, how much more does she need?

38__ 1

6__ 1

2__ 1

8__

512__ 1

6__ 1

6__ 1

8__

34__

13__

1324__ 3

8__

14__ 7

24__

512__ cup

Group Work

SummaryMake up 2 truths and 1 lie about fractions

Put the three statements on the front

Put the lie on the back of the card

HomeworkWorkbookPage 35

Section 5-2+ and – with unlike

denominators

*Remember to show your work