The Number System
Simplify the following expression.
31.68 + 1.8
33.48
**When adding fractions you line up the decimal points and add zeros where necessary!
Susie has a bag with 8 hair pins, 7 pencils, 2 snacks, and 4 books. What is the ratio of books to pencils.
4 to 7
*which ever item is written first, comes first in the ratio!
If x=2, what is the value of x2 + x - 3?
Final Answer: 3
22= 4
4 + 2 - 3= 3
Is A=1/2bh the same as A=bh/2? Which shape do these formula belong to? What do they find?
Yes, Triangle, Area
Coach Nick recorded the number of strokes it took each member of the golf team to complete 9-holes.
36 43 21 28 44 51 29 52 28
What is the mode of the number of strokes it took the players to complete 9-holes?
28.
What is the Least Common Multiple (LCM) of 4 and 6?
12
**Remember the ladder method. Get both numbers down to prime and then multiply the vertical and horizontal outside "rungs" of the ladder.
What is 55% of 50?
27.5
55% x 50 or .55 x 50
Mr. Richardson drove his car for 113.75 miles in 2.5 hours. The equation below can be used to find the rate (r), in miles per hour, at which Mr. Richardson drove his car.
r x 2.5= 113.75
What was the rate, in miles per hour at which Mr. Richardson drove his car?
45.5 miles per hour
A shape with 2 sets of parallel lines have a length of 4cm and a width of 6cm. What is the area of this shape? Must have a label.
24 squared cm
Describe the parts of a box and whisker plot.
Whiskers: Lower and Upper Extreme (highest and lowest value)
Quartile 1: Median of lower half of data set
Quartile 2: Median of data set
Quartile 3: Median of upper half of data set
Each member of the cross country team ran 1.777 hours yesterday and 1.13 hours today. Each member ran 4.3 miles every hour. How many miles did each member run yesterday?
7.6411
**They only asked about how many miles each person ran YESTERDAY, not today!! :)
**Multiplying decimals you line of the last digits and multiply like normal!
Drew painted his uncle's barn on Saturday. It took him 8 hours to paint the whole shed. His uncle paid him 216 dollars for his work. What was Drew's pay rate, in dollars per hour.
27 dollars per hour.
Which expression has the greatest value?
A. 33 + 19
B. 52 + 32
C. 34 - 1
D. 35 - 165
C. 34 - 1
Final Answer : C. 80
A shape with 6 rectangular faces has a height= 2in, length= 3in, and a w= 5in. What is the name of this shape? What is the surface area of this shape?
Rectangular prism.
SA= 2(lw)+ 2(lh) + 2(wh)
62 squared inches.
A bookstore owner recorded the number of books sold each week for the past 9 weeks.
278 225 300 198 306 204 198 98 263
Calculate the mean.
230
What is the Greatest Common Factor (GCF) of 66 and 99.
33.
**Use the ladder method. Get the two numbers down to prime and then ONLY multiply the vertical ladder "rung"
James wants to buy a new cell phone package. There are 3 different packet deals.
Package 1- $160 for 4 months
Package 2- $128 for 4 months
Package 3- $60 for 2 months
Which package offers the best deal?
Package 3.
**Remember better buy questions...Money is always on top!
Mrs. Birdsey purchased three packs of pencils for her art class. Each pack had the same number of pencils (p). She kept 5 pencils for herself and distributed the remaining pencils equally among the seven students in the class.
Create an expression for the number of pencils each student received.
3p - 5 / 7
**3p minus 5 divided 7
An equilateral triangular prism has a length of 4cm, sides are 5cm and a height of 6cm. What is the surface area of the prism?
SA= 90cm2
A basketball coach recorded the number of points his team scored in each of the 11 games they played.
45 59 61 67 68 69 70 72 74 75 77
What is the interquartile range (IQR) of the data?
13
Jeremy is cutting a board into pieces that are 1 and 2/3 feet long. The board itself is 14 and 1/4 feet long. How many 1 and 2/3 long pieces will Jeremy be able to cut?
8 and 11/20, so he will be able to cut 8 pieces!
**Remember change mixed numbers into improper fractions and then Keep Change Flip (KCF)
A gumball machine has 200 red gumballs. If the red gumballs are 50% of the total number of gumballs, How many gumballs are in the machine?
400
Sheldon earns $9 per hour in his job as a sales assistant. if h represents the number of hours he works and s represents the dollars he earns, which equation represents the relationship between the number of hours worked and dollars earned?
A. s = 9h
B. h = 9s
C. s = 9 + h
D. h = 9 + s
A. s = 9h
You are wrapping a gift for a friend. The box you are using to place the present in has a volume of 200cm3. The gift you are placing in the box has the following dimensions--4cm x 5cm x 9cm
Will you be able to fit your present in the box?
Yes. volume of gift= 180cm3
180 < 200
Why is it important to consider the any outliers when determining the best measure of center?
If there is an outlier in a data set it will effect the mean.