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Christopher bought 5 pizzas for the team. Each pizza cost $9.75 . How much did all the pizzas cost?

$48.75

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Four friends went out for dinner. They shared a large pizza and a pitcher of soda. The total cost of their dinner was $31.76 . If they divide the cost equally, how much should each friend pay?

Solution

What are you asked to find? How much should each friend pay?
Write a phrase. $31.76 divided equally among the four friends.
Translate to an expression. $31.76 ÷ 4
Simplify. $7.94
Write a sentence. Each friend should pay $7.94 for his share of the dinner.
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Six friends went out for dinner. The total cost of their dinner was $92.82 . If they divide the bill equally, how much should each friend pay?

$15.47

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Chad worked 40 hours last week and his paycheck was $570 . How much does he earn per hour?

$14.25

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Be careful to follow the order of operations in the next example. Remember to multiply before you add.

Marla buys 6 bananas that cost $0.22 each and 4 oranges that cost $0.49 each. How much is the total cost of the fruit?

Solution

What are you asked to find? How much is the total cost of the fruit?
Write a phrase. 6 times the cost of each banana plus 4 times the cost of each orange
Translate to an expression. 6 ( $0.22 ) + 4 ( $0.49 )
Simplify. $1.32 + $1.96
Add. $3.28
Write a sentence. Marla's total cost for the fruit is $3.28.
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Suzanne buys 3 cans of beans that cost $0.75 each and 6 cans of corn that cost $0.62 each. How much is the total cost of these groceries?

$5.97

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Lydia bought movie tickets for the family. She bought two adult tickets for $9.50 each and four children’s tickets for $6.00 each. How much did the tickets cost Lydia in all?

$43.00

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Key concepts

  • Add or subtract decimals.
    1. Write the numbers vertically so the decimal points line up.
    2. Use zeros as place holders, as needed.
    3. Add or subtract the numbers as if they were whole numbers. Then place the decimal in the answer under the decimal points in the given numbers.
  • Multiply decimal numbers.
    1. Determine the sign of the product.
    2. Write the numbers in vertical format, lining up the numbers on the right.
    3. Multiply the numbers as if they were whole numbers, temporarily ignoring the decimal points.
    4. Place the decimal point. The number of decimal places in the product is the sum of the number of decimal places in the factors. If needed, use zeros as placeholders.
    5. Write the product with the appropriate sign.
  • Multiply a decimal by a power of 10.
    1. Move the decimal point to the right the same number of places as the number of zeros in the power of 10.
    2. Write zeros at the end of the number as placeholders if needed.
  • Divide a decimal by a whole number.
    1. Write as long division, placing the decimal point in the quotient above the decimal point in the dividend.
    2. Divide as usual.
  • Divide decimal numbers.
    1. Determine the sign of the quotient.
    2. Make the divisor a whole number by moving the decimal point all the way to the right. Move the decimal point in the dividend the same number of places to the right, writing zeros as needed.
    3. Divide. Place the decimal point in the quotient above the decimal point in the dividend.
    4. Write the quotient with the appropriate sign.
  • Strategy for Applications
    1. Identify what you are asked to find.
    2. Write a phrase that gives the information to find it.
    3. Translate the phrase to an expression.
    4. Simplify the expression.
    5. Answer the question with a complete sentence.

Questions & Answers

I'm interested in biological psychology and cognitive psychology
Tanya Reply
what does preconceived mean
sammie Reply
physiological Psychology
Nwosu Reply
How can I develope my cognitive domain
Amanyire Reply
why is communication effective
Dakolo Reply
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
Wekolamo Reply
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Manix Reply
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
JESSY Reply
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
Simon Reply
compare and contrast skinner's perspective on personality development on freud
namakula Reply
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
Amesalu Reply
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
Zyryn Reply
good👍
Jonathan
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
Kelu Reply
interpersonal relationships
Abdulfatai Reply
What would be the best educational aid(s) for gifted kids/savants?
Heidi Reply
treat them normal, if they want help then give them. that will make everyone happy
Saurabh
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Source:  OpenStax, Prealgebra. OpenStax CNX. Jul 15, 2016 Download for free at http://legacy.cnx.org/content/col11756/1.9
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