Number Sense
Find the value of the square root of 144.
The value is 12.
Represent this sum on a number line.
-4 + 7
Check number line with teacher, the sum is 3.
Simplify 6(x + 4)
Use the distributive property to get 6x + 24
Draw a net for a rectangular prism.
Check drawing with teacher.
Find the mean of 4, 6, 8, 2, 5.
Mean = 25/5 = 5
Is 3.45 rational or irrational? Explain your reasoning.
3.45 is rational. It is a terminating decimal and can be written as a ratio of 69/20.
Which expression is equivalent to 4/5 - 2/3
a) 4/5 + (-2/3) b) 4/5 - (-2/3)
c) 2/3 - 4/5 d) 2/3 + 4/5
The correct answer is A.
Simplify:
4y + 7 - 9y
-5y +7 or 7-5y
How many sides does a pentagon have?
A pentagon has 5 sides.
What is the median of this data?
12, 18, 30, 11, 17
Median = 17
Which expressions are equivalent to -(20/4)?
a) 20/-4 b) -20/-4
c) -20/4 d) 20/4
The correct answer is A and C.
What is the value of this expression?
3/5 - 5/7
The answer is -4/35
I have a line that does not pass through the origin, is this line proportional? Why or why not?
No, A proportional line will always pass through the origin and this line did not.
Find the area of a circle given the diameter of 10.
Area = pi(r2)
Use 3.14 for pi.
A = 3.14 x 25 = 78.5 units square
What is the probability of flipping heads and rolling an odd number on a number cube?
1/2 x 1/2 = 1/4
Describe the relationship between 62 and the square root of 36.
A number squared and the square root of a number are inverse operations. These operations "undo" each other.
Write the following fraction as a decimal.
6/11
The answer is 0.54 repeating.
Solve this equation
-3x + 4 = 22
x = -6
If a triangle has two angles that measure 30 and 73 degrees, find the measure of the missing angle?
x + 103 = 180
x = 77 degrees
You want to survey people in your neighborhood about a new library. You ask every 5th person that goes into the local grocery store. Is your data biased or unbiased, why or why not?
Your data is unbiased. You are getting a random sample.
Write the prime factorization of 200 using exponents.
23 x 52
Solve this expression:
7 + 2(5) - 6
The answer is 11.
Find the slope of the line between these two points:
(3,7) and (-5, 8)
The slope is -1/8
The formula for the volume of a rectangular prism is l x w x h. If you have a rectangular prism with a length of 2 feet, width of 5 feet and a height of 36 inches, what will the volume be?
V = 2 x 5 x 3 = 30 feet cubed
All units must be the same (51,840 inches cubed)
I have 2 blue socks, 4 red socks and 6 white socks in my drawer. What is the probability that I will pick 2 red socks out of my drawer?
4/12 x 3/11 = 12/132 = 1/11