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- Fundamentals of mathematics
- Decimals
- Summary of key concepts
This module is from Fundamentals of Mathematics by Denny Burzynski and Wade Ellis, Jr. This module reviews the key concepts from the chapter "Decimals."
Summary of key concepts
Decimal point (
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decimal point is a point that separates the units digit from the tenths digit.
Decimal or decimal fraction (
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decimal fraction is a fraction whose denominator is a power of ten.
Converting a decimal to a fraction (
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Decimals can be converted to fractions by saying the decimal number in words, then writing what was said.
Rounding decimals (
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Decimals are rounded in much the same way whole numbers are rounded.
Addition and subtraction of decimals (
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To add or subtract decimals,
- Align the numbers vertically so that the decimal points line up under each other and the corresponding decimal positions are in the same column.
- Add or subtract the numbers as if they were whole numbers.
- Place a decimal point in the resulting sum directly under the other decimal points.
Multiplication of decimals (
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To multiply two decimals,
- Multiply the numbers as if they were whole numbers.
- Find the sum of the number of decimal places in the factors.
- The number of decimal places in the product is the number found in step 2.
Multiplying decimals by powers of 10 (
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To multiply a decimal by a power of 10, move the decimal point to the right as many places as there are zeros in the power of ten. Add zeros if necessary.
Division of a decimal by a decimal (
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To divide a decimal by a nonzero decimal,
- Convert the divisor to a whole number by moving the decimal point until it appears to the right of the divisor's last digit.
- Move the decimal point of the dividend to the right the same number of digits it was moved in the divisor.
- Proceed to divide.
- Locate the decimal in the answer by bringing it straight up from the dividend.
Dividing decimals by powers of 10 (
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To divide a decimal by a power of 10, move the decimal point to the left as many places as there are zeros in the power of ten. Add zeros if necessary.
Terminating divisions (
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terminating division is a division in which the quotient terminates after several divisions. Terminating divisions are also called exact divisions.
Nonterminating divisions (
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nonterminating division is a division that, regardless of how far it is carried out, always has a remainder. Nonterminating divisions are also called nonexact divisions.
Converting fractions to decimals (
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A fraction can be converted to a decimal by dividing the numerator by the denominator.
Questions & Answers
I'm interested in biological psychology and cognitive psychology
what does preconceived mean
How can I develope my cognitive domain
why is communication effective
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.
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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
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Wekolamo
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ARC
A child is a member of community not society elucidate ?
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compare and contrast skinner's perspective on personality development on freud
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.
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
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interpersonal relationships
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Saurabh
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Source:
OpenStax, Fundamentals of mathematics. OpenStax CNX. Aug 18, 2010 Download for free at http://cnx.org/content/col10615/1.4
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