7th Grade SBAC

Formulas

200

Area of a triangle is 

1/2 bah or bh/2

400

Volume for a rectangular prism is

lxwxh

600

y=kx is the formula to find what?

Constant of Proportionality

800

The area of a circle is?

The Circumference of the circle is?

A=pi x radius^2

C=2 x Radius x pi or C=d x pi

1000

If the area of a circle is 4pi and a square has the same side length as the radius of the circle what is the perimeter of the square?

8 units

Arithmetic

200

2x+5=15 x=?

5

400

4x-19>45

x>16

600

5a+43b-16a+18b 

Simplify the expression

-11a+61b

800

If x+3=10, then what is 3x+3?

24

1000

If 2x-1/5y=0, what is y?

y=1/10x

Scale Factor

200

If square ABCD has side lengths of 2in. and is given a scale factor of 4. What is the perimeter of the NEW square?

32in is perimeter

400

Going from figure a to b we use a scale factor of 1/3. If  b has a side length of 33 the corresponding side to a would be...

99

600

The area of a square is 16 in². If multiplied by a scale factor of 5 what is the new squares area?

400 in²

800

The area of a square is X and after multiplying the sides by 2 the area is 64 units, what is the side length of the original square?

X=4

1000

The area of a right isosceles triangle is 8, after multiplying the sides by x, what is the area of a square with the same sides as the triangle?  

The area is 16

Probability

200

The probability of landing on heads is x/y?

What is the likelihood of it happening?

50/50

Equally Likely as not

400

If I roll a 6 sided die then roll it a second time, what is the probability of rolling a total of 5? (ex. a 2 then a 3)

4/36 or 1/11

600

Blodgett went to the Las Vegas Strip to bet on a football game. The odds of winning were .301 for his favorite team. The odds of Medina's team winning was .3011. Whose odds were higher? By how much %?

Medina's by .01%

800

If a bag of marbles has 15 marbles and there are 3 colors of red, blue, and black of equal amount, what is the chance that a person gets red 

1/3

1000

A person has 2 dice and he wants to know what is chance that the sum of both dice is more than 1?

100%

Ratios and Proportions

200

A ratio equivalent to 4:9 is...

8:18, 2:4.5, 6:10.5, etc.

400

What is the ratio of apples and pears if I have 2 pears and 10 apples mean?

For every 10 apples there is 2 pears

600

The ratio 4:20 represents the ratio of teachers to students, how many teachers are there if there is 50 students?

10 teachers

800

What is the equivalent ratio of 1:3?

2:6,3:9,4:12...

1000

How many marbles are there if they have 5 marble bags and each bag has 4 black marbles and 5 red marbles?

45 marbles