Basic Mathematics for Limited Operations

• A fraction is a part or portion of a whole, expressed as a numerator over a denominator.
• Sum is the answser to an addition problem
• Difference is the answer to a subtraction problem
• Product is the answer to a multiplication problem
• Dividend is the number divided into a division problem
• Divisor is the number that is divided into the dividend
• Quotient is the answer to a division problem
• Remainder is the number that is "left over" when the dividend cannot be evenly divided by the divisor
• Fractions are parts of whole numbers
• Older x-ray control panels with synchronous timers have exposure times that are expressed in fractions of seconds
• The lower number of a fraction is called the denominator
• The denominator indicates the number of equal parts into which the whole has been divided
• The upper number of a fraction is called the numerator
• The numerator indicates the number of parts or pieces of the divided whole
• Figures to the right of the decimal point represent the numerator of the fraction
• A mixed number consists of a whole number and a fraction
• A percentage is a form of a fraction with a denominator of 100
• An equation is a mathematical declaration that two mathematical statements are equal to each other
• A ratio expresses the operation in which one number is divided by another
• A proportion is a statement that two ratios are equal to each other
• In a direct proportion, when one of the values increases, the other also inreases
• In an inverse proportion, when one of the values increases the other decreases
• An exponent is when a number is multiplied by itself
• The square root of a number is the value that when multiplied by itself equals the original number
• Many scientists prefer measurements made in the metric system mainly because it is based on the number 10 which simplifies many calculations
• In the metric system, meters are used to measure length
• In the metric system, liter is used to measure liquid volume
• In the metric system, gram is used to measure weight
• Using metric prefixes, Kilo(K)=1000
• Using metric prefixes, Hecto(H)=100
• Using metric prefixes, Deka(da)=10
• Using metric prefixes, Deci(d)=0.1
• Using metric prefixes, Centi(c)=0.01
• Using metric prefixes, Milli(m)=0.001
• Using metric prefixes, Micro(mc)=0.000001
• Using metric prefixes, Nano(n)=0.0000000001
• Common English and Metric equivalents for measuring length is inch and yard
• Common English and Metric equivalents for measuring liquid is ounce and quart
• Milliamperage (mA) is a unit that represents the rate at which x-rays are produced
• A fraction in which the top number is larger than the bottom number is called an improper fraction