OMG! Algebra is easy. First, an “expression” is just a number sentence. For example, if you wanted to buy the Wii games and you didn’t know how much these games cost you could show this “number expression” by writing 3 x _________ . The blank is there because it’s what you don’t know, the cost of each game. With algebra, instead of a blank you put a letter. It could be any letter X, Z, G… Usually the letter is the first letter of the thing you talking about. So to write an algebraic expression you would write:3 x C. 3 because you want 3 games and C because you don’t know the Cost of each game.

Mrs. Sweet land gives 3 bonus points for each extra-credit problem correctly completed. If b stands for the number of

extra-credit problems correctly completed, which expression is equal to the total number of bonus points?

• a. b x 3b. b + 3

• c. b ÷ 3 d. b - 3

• e. 3 > b

The answer is B*3 MRS.SWEETLAND SAID 3BONUS POINTS FOR EXTRA CRTEDIT

Find the value of y. x - y = y x = 10

• A. 32

• B. 16

• C. 4

• D. 5

• E. 2

You know how to find the sum of the angles of a polygon. The sum of the angles for a triangle (3 sides) is 180. The sum of the angles of a quadrilateral (4 sides) is 360. The sum of the angles

of a pentagon (5 sides) is 540. If “S” is the amount of sides, which expression can be used to illustrate this way of finding the

sum of the angles of any polygon.

• A. (S – 2) * 180

• B. S + (2 + 180)

• C. 180 * S

• D. (360 x 2) 90

45

45

454590

180

You add up the angles and the sum for any triangle is 180

90

9090

90

360

You add up the angles and the sum for any square or rectangle or 4 sided figure and the sum is 380

9090

9090

110110

100 100

120

You add up the angles and the sum for any 5 sided figure and the sum is 540

110110

100100120

540

180

360

540

180+180=

360+180=

180

180

180

180

EXPLANTION

I GOT MY ANSWER WHEN I NOTICE THAT

YOU ADD 180 TO EVERY ONE

SO 180+180=360THEN 360+180=540.

180180

How much fencing is needed to go around the perimeter of this yard?

How much sod is needed to cover this yard?

One angle of a RIGHT triangle is 30 degrees. Which expression shows how to find the measure of the third angle?

30

90

???

A. 3* 180=A

B. 3 * 90 + 60=A

C. (360 / 3) - 90

D. 180 – 90 – 30=A

Calvin’s little brother jumped up and down. “Here they come!” shouted Calvin. Around the corner came the Thanksgiving Day Parade. Half of the people were on floats; 25% were in marching bands; clowns made up 1/8; tv stars made up 1/16; and there were 10 city officials, or 1/16. How many people were in the parade, and how many were in each group?

80

40

1010

Since these are the same fraction they both have to be 10

20

20

This is 1/8 and this is twice as big as /16

This 1/4 is twice as big as 1/8

This ½ and this is twice as big as 1/4

Fraction Decimal Percent Whole Number/t

otal number

of people

Floats 1/2 0.50 50% 80Marching

Bands 1/4 0.25 25% 40Clowns 1/8 .125 12.5

520

TV Stars 1/16 .0625

10% 10

City offici

als

1/16 .0625

10% 10

Total peopl

e

About how much of each hour does a radio program schedule for weather?

A. 1/10

B. B. 2/10

C. C. 3/10

D. D. 5/10

E. E. 10/10

How many minutes of each hour does a radio program schedule for weather?