Unit 7 Math Review

What areEquivalent Fractions?

• Fractions that are equal. The number of equal pieces are different, but the fraction’s value (out of the whole) is the same.

• As an example, think of a two-slice pizza that has then been cut into four slices, six slices, etc. The size of the original pizza hasn’t changed!

Find Equivalent Fractions

• What is a fraction equal to 1/2 ?

• What is a fraction equal to 2/5 ?

• What is a fraction equal to 15/30 ?

Comparing Fractions

Which fraction is bigger?

6/7 or 3/5

How can you tell?

Comparing Fractions continued

Which fraction is bigger?

1/5 or 1/7

How can you tell?

Ordering Fractions

Smallest Largest

1/2

1/23

1/3

1

11/12

75/100

Ordering Fractions

Smallest Largest

1/2

1/23

1/3

1

11/12

75/100

Ordering Fractions

Smallest Largest

1/2

1/23

1/3

111/12

75/100

Ordering Fractions

Smallest Largest

1/2

1/23

1/3

111/1275/100

Ordering Fractions

Smallest Largest

1/2

1/23

1/3

111/1275/100

Ordering Fractions

Smallest Largest

1/2

1/23

1/3 111/1275/100

Ordering Fractions

Smallest Largest

1/21/23 1/3 111/1275/100

Finding the ONE (or the WHOLE)

Finding the ONE(or the WHOLE)

Finding the ONE(or the WHOLE)

Fractions in Number Stories

Courtney was tired of her collection of 12 teddy bears. She sold 3/4 of them at a yard sale.

9

3

How many teddy bears did she sell?

How many teddy bears does she have left?

ProbabilityA sack contains 4 red marbles

3 green marbles

2 black marbles

5 white marbles

You reach into the sack and pull out a marble

without looking. About what fraction of the

time would you expect to pull out a black

marble?

2/14 or 1/7

Probability

A sack contains 4 red marbles

3 green marbles

2 black marbles

5 white marbles

What percent chance do you have of pulling out a

red marble?

(Use the calculator on your widgets to help you!)

4 / 14 x 100 = ?

Answer: 28.5%

Plotting Coordinate Points

1 2 3 4 5 6 7 8 9 10

12345678910

Where would you plot (3, 3)?

Where would you plot (5, 7)?

Where would you plot (9, 0)?

Where would you plot (7, 10)?

Which Fraction is Larger?

5/6 or 11/12

11/12 is bigger because it is only 1/12 away from being a whole.

5/6 is 1/6 away from being a whole.

Twelfths are smaller pieces than sixths.

In other words, 1/12 is smaller than 1/6, so 11/12 is the larger fraction.

Making SpinnersColor the spinner so that it will land on red

about 50% of the time.

Color the spinner so that it will land on

blue about 1/4 of the time.

What fraction and percent of the spinner is yellow?1/4 or 25%

Adding and Subtracting Fractions

1/5 + 2/5 = 3/5

6/7 - 3/7 = 3/7

1/6 + 1/3 = 3/6 or 1/2 COMMON DENOMINATOR!

2/3 - 1/4 = 5/12 COMMON DENOMINATOR!

Good luck mathematicians. Happy studying!