| Math Check Solutions
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
Chapter 11
Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 1
Money for Fun
If you earn $50,000 a year and spend 5 percent of that on
sports and entertainment, how much do you spend per year on
sports and entertainment?
Answer: .05 x $50,000 = $2,500 per
year
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Chapter 2
Reaping Revenue
A charity baseball game earned $6,010 in ticket sales, $837
in T-shirt sales, $1,500 in advertising, and $375 in parking.
What was the total revenue?
Answer: $6,010 + $837 + $1,500 + $375 =
$8,722
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Chapter 3
Winning Ways
If the number of athletes participating in the Special Olympics is about 1 million, and that number is expected to increase by one-third for the next Olympics, how many athletes may participate?
Answer: 1,000,000 ÷ 3 = 333,333; 1,000,000 + 333,333 = 1,333,333
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Chapter 4
Spare Change
Tasha makes $40,000 per year. Her discretionary income is 8 percent of that. Does she have enough money for tennis lessons that cost $75 per month?
Answer: $40,000 x .08 = $3,200 available; tennis lessons @ $75: $75 x 12 = $900 per year; yes.
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Chapter 5
Retail Culture
Alita makes salsa to sell at Peruvian Culture Night at her
school. She buys the salsa ingredients for $25.09, and two
boxes of containers for $3.29 each. She sells each container
of salsa for $3.75. She sells 23 salsa containers. How much
profit has she made?
Answer: $60 - $24 = $36 dollar markup; $36 ÷ $60 = .60 or 60% markup percentage
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Chapter 6
Measuring Team Spirit
Nicolas is doing a survey on how often his classmates attend school sporting events. Sixteen people attend two per month; 12 people attend one per month; and two people attend three per month. What is the average number of events attended by his classmates per month?
Answer: (16 x 2) + (12 x 1) + (2 x 3) = 50; 50 ÷ 30 = 1.66
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Chapter 7
The Wearing of the Green
Green Cleaners sponsors the local softball team. They purchase team uniforms and provide free environmentally safe uniform cleaning. In addition, any customer who brings in the most recent game program will receive $5 off any order of at least $50. What is the percentage of the promotional discount?
Answer: $5 ÷ $50 = .1 or 10%
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Chapter 8
Promoting Profits
If Mario's Collector Cards store made $80,000 in sales last year and 5 percent of that will be spend on promotions next year, what will be the promotional budget?
Answer: $80,000 x .05 = $4,000
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Chapter 9
Stats Math
Every year MLB awards a silver bat to each player with the highest batting average in his position. If the first baseman from your favorite team won with an average of .323 and had 180 hits, how many times did he go to bat for the season?
Answer: 180 hits ÷ .323 = 557 times
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Chapter 10
Receipts for Fun
Theme parks collect $5.5 billion per year in receipts, and the average ticket costs about $25. Estimate how many people buy tickets per year on average.
Answer: $5,500,000,000 ÷ $25 = 220,000,000
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Chapter 11
Royalty Rates
If the band OutKast sold 378,000 units, or CD albums, at the top royalty rate, and each CD sold for $12.95, how much would the band earn?
Answer: 378,000 x $12.95 = $489,510; $489,510 x .15 = $73,426.50
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Chapter 12
Music Markup
If a distributor sells CDs with a basic cost of $11.90 per CD and a markup of 26 percent, what is the retail price of a CD?
Answer: $11.90 x .26 = $3.09; $11.90 + $3.09 = $14.99
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Chapter 13
TV Market Share
There are 105 million TV households in the U.S. One Nielsen ratings point represents 1 percent of those households. If a new show has a 10.0 rating, how many households are tuned in?
Answer: 105 million x .10 = 10.5 million households
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Chapter 14
Sources of Income
BMI collects for and pays music writers' royalties. Alicia wrote a two-minute song that was used on a prime-time TV show on a major network. What is her royalty payment if she is paid $11.50 per station for 45 seconds or more of airplay—and the network has 532 stations?
Answer: $11.50 x 532 = $6,118
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Chapter 15
Fun on a Budget
Your parents are taking you and your cousins, who are eight and nine years old, to Summerland Water Park Resort. The promotion to stay for three days is $195 per child (to age nine), a savings of $60 each—and $495 per adult, a savings of $250 each. How much money would all five tickets cost if not discounted?
Answer: ($195 + $60) x 2 = $510; ($495 + $250) x 3 = $2,235; $510 + $2,235 = $2,745
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Chapter 16
Working Treble Time
Shawna is an editor for the music magazine Treble Makers.
She works 11 hours a day, six days a week, 50 weeks per year.
How many hours does she work annually?
Answer: 11 x 6 x 50 = 3,300 hours
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