Algebra 1(A/B)

Fractions Review

• Class Announcements

• Return Chapter 1 Tests

• Wednesday Warm-Up

• Fractions Review Notes

• Treasure Hunt Review

• Begin Homework

*Wednesday Warm-Up

1) Which of the following is equivalent to , for all x.

A) B) C)

D) E)

2) A rectangle is twice as long as it is wide. If the width of the rectangle is 3 inches, what is the rectangle’s area, in square inches?

A) B) C)

D) E)

x x x x

22x4x

4x 4x4x

1815

1296

*Adding/Subtract Fractions

*We can add/subtract fractions that have the same denominator

+ =

4

14

34

14

Steps (same denominator):

1. Add/subtract the numerators

2. Keep the same denominator

3. Simplify if necessary

*Adding/Subtract Fractions

2 15 5

2 59 9

6 37 7

1)

2)

3)

*Adding/Subtract Fractions

*What about fractions that don’t have the same denominator?

Steps (different denominators):

1. Multiply fractions by a number to create a common denominator

2. Add/subtract the numerators

3. Keep the same denominator

4. Simplify if necessary

*Adding/Subtract Fractions

5 18 2

58

48

18

12

*Adding/Subtract Fractions

3 47 21

7 110 3

11 1 312 8 4

1)

2)

3)

Steps (different denominators):

1. Multiply fractions by a number to create a common denominator

2. Add/subtract the numerators

3. Keep the same denominator

4. Simplify if necessary

*Multiplying Fractions*We can multiply fractions right away without worrying about their denominators

3 65 7

3 65 7

1835

*Multiplying Fractions

1 24 3

2 12

5 3

3 12 14 6 3

1)

2)

3)

Steps:

1. Multiply numerators and denominators separately

2. Simplify if necessary

*Dividing Fractions

*Can we divide fractions the same way we multiply them?

*Dividing Fractions

2 29 3

5 53

8 4

5 1 27 6 3

1)

2)

3)

Steps:

1. Take the reciprocal of the second fraction

2. Change the division symbol to multiplication

3. Apply multiplication rules

4. Simplify if necessary

Dividing by a fraction is equivalent to multiplying by its reciprocal!

*Sunken Treasure Practice

• Work on the assigned problems

• A student will be called on at random to present

the answer

• If the answer is correct, the student will get a

chance to win a prize

*Sunken Treasure Practice

7 110 6

9 45 3

132

8

1)

2)

3)

4)

5)

7)

6)

8) 5 1 19 27 3

8 77 10

33

7

3 46

8 9

5 4 7 17 2 8 2

*Sunken Treasure Practice

4 25 3

2 33 5

41

7

1)

2)

3)

4)

5)

7)

6)

8) 9 1 218 6 3

6 57 9

35

4

1 23

8 9

2 1 15 34 2 16 8

Homework• Fractions Half-Sheet Practice• Show all work!

• Fractions Quiz tomorrow (9/13)

Algebra 1(A/B)

Fractions Review (Day 2)

• Class Announcements

• Warm-Up

• Computer Lab Practice

• Homework Check/Questions

• Fractions Quiz

Warm-Up

1) 2) 3 3 17

4 8 2

7 1 14 1

10 4 8

Computer Lab Expectations

• Students will be working in pairs

• Must fill out the entire worksheet

• Be quiet while in the hallway there are other classes

going on

• Stay on the website and stay on task

• When you complete the worksheet, get a teacher’s

attention

Fractions Jeopardy Game

Homework Questions

Quiz Time

• Clear your desks of everything except for a

pencil and a calculator

• Show your work for credit on the quiz

• NO TALKING until everyone has completed

the quiz

• Good luck!