CHSPE MATH PRACTICE EXAM WITH
COMPLETE SOLUTIONS
If Morgan tosses a fair coin 4 times, what is the probability that he will get exactly two
heads and two tails? - ANSWER-1. 2 x 2 x 2 x 2 = 16 possibilities.
2. Make a systematic listing :
HHTT HTHT TTHH THTH THHT HTTH
3. There are 6 outcomes with 2H and 2T, so 6/16 = 3/8
Shopmart is selling a multi-disk DVD sets of Dr. Who episodes at $2 per-disk discount
from its usual price of $15.95. What is the percentage reduction, to the nearest whole
percent, on these disks? - ANSWER-amount off / original price = 2/15.95 = 12 percent
Mean, Median, Mode - ANSWER-*Mean:* Add all #, then divide by how many # there
are
~"Average"
*Median:* Middle # of ordered (Least to Greatest) list. If # are even, then the 2 middle #
averaged out.
*Mode:* tthat occurs the MOST. Can be more than one.
Range: Subtracting the minimum value from maximum value
Volume of a cylinder - ANSWER-V=πr²h
Celsius to Fahrenheit - ANSWER-(C x 1.8) + 32
Fahrenheit to Celsius - ANSWER-(F-32)/1.8
circumference of circle - ANSWER-2πr
Range - ANSWER-distance = rate x time
slope int. form - ANSWER-y = mx + b
y= intercept
m = slope
slope of line through points - ANSWER-m = (y2-y1) (x2-x1)
Volume of a cube - ANSWER-LxWxH
COMPLETE SOLUTIONS
If Morgan tosses a fair coin 4 times, what is the probability that he will get exactly two
heads and two tails? - ANSWER-1. 2 x 2 x 2 x 2 = 16 possibilities.
2. Make a systematic listing :
HHTT HTHT TTHH THTH THHT HTTH
3. There are 6 outcomes with 2H and 2T, so 6/16 = 3/8
Shopmart is selling a multi-disk DVD sets of Dr. Who episodes at $2 per-disk discount
from its usual price of $15.95. What is the percentage reduction, to the nearest whole
percent, on these disks? - ANSWER-amount off / original price = 2/15.95 = 12 percent
Mean, Median, Mode - ANSWER-*Mean:* Add all #, then divide by how many # there
are
~"Average"
*Median:* Middle # of ordered (Least to Greatest) list. If # are even, then the 2 middle #
averaged out.
*Mode:* tthat occurs the MOST. Can be more than one.
Range: Subtracting the minimum value from maximum value
Volume of a cylinder - ANSWER-V=πr²h
Celsius to Fahrenheit - ANSWER-(C x 1.8) + 32
Fahrenheit to Celsius - ANSWER-(F-32)/1.8
circumference of circle - ANSWER-2πr
Range - ANSWER-distance = rate x time
slope int. form - ANSWER-y = mx + b
y= intercept
m = slope
slope of line through points - ANSWER-m = (y2-y1) (x2-x1)
Volume of a cube - ANSWER-LxWxH
