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Transcript
REVIEW VOCABULARY Comparing and Ordering 1. Scientific Notation – form to express really big or really small numbers (ex. 4.6x10²) 2. Ascending – from least to greatest 3. Descending – from greatest to least 4. Fraction – part of a whole 5. Percent – parts per 100 Perfect Square/ Square Root 1. Perfect Square – a number made by squaring a whole number 2. Square Root – the number that you multiply by itself to give a perfect square 3. Consecutive – numbers which follow each other in order, without gaps, from smallest to largest Order of Operations 1. Expression – numbers, symbols, and operation symbols grouped together 2. Order of Operations – Grouping symbols, exponents, multiplication, division, addition, and subtraction 3. Exponent – a number that says how many times you use that number in multiplication 4. Coefficient – the number being multiplied by a variable 5. Variable – a letter used to represent an unknown number 6. Constant – a number that stands alone 7. Substitute – to put in place of another 8. Simplify – to make less complex, easier Real Number System 1. Real numbers – all numbers 2. Rational numbers – a number that can be made by dividing two integers; the decimal terminates or repeats with a pattern 3. Irrational numbers – a number that cannot be made by dividing two integers; the decimal never terminates of repeats with a pattern 4. Integers – whole numbers and their opposites 5. Whole numbers – the numbers zero to infinity; has no fractional part 6. Natural numbers – the counting numbers, 1 to infinity; has no fractional part 7. Subsets – a set that is part of a larger set Combining Like Terms/ Distributive 1. Combine – to put together 2. Term – a piece of an expression that is separated by an operation symbol 3. Like Terms – terms that have the same variables raised to the same exponent 4. Distributive Property – multiplying a number by a group of numbers that are added/subtracted together Properties 1. Commutative Property – you can switch the order of the numbers around when you add or multiply and you get the same answer 2. Associative Property – it doesn’t matter how you group the numbers when you add or multiply 3. Additive Identity – adding zero to a number leaves it unchanged 4. Multiplicative Identity – multiplying a number by one leaves it unchanged 5. Multiplicative Property of Zero – any number multiplied by zero equals zero 6. Additive Inverse – a number plus its opposite equals zero 7. Multiplicative Inverse – any number multiplied by its reciprocal equals one Solving Equations 1. Equation – states that two expressions are equal 2. Equal – the same 3. Sum – the answer to an addition problem 4. Product – the answer to a multiplication problem 5. Quotient – the answer to a division problem Ratios and Proportions 1. Proportion – two ratios are equal to each other 2. Ratio – comparison of two quantities 3. Numerator – the top part of a fraction 4. Denominator – the bottom part of a fraction 5. Cross Product – the answer when we multiply the numerator of each ratio by the denominator of the other ratio 6. Cross Multiplication – the method of when we multiply the numerator of each ratio by the denominator of the other ratio Consumer Applications 1. Percent of Change – the percent that a quantity increases or decreases 2. Deposit – money put into a bank account 3. Withdrawal – money taken out of a bank account 4. Discount – a percent off of the original price. It is the original price minus the discount 5. Mark-Up – a raise in the price of an item for sale 6. Sale Price – the cost of an item on sale 7. Sales Tax – the percent of money added on to a total that goes to the government 8. Tip – the percent of money added on to a bill that is given for a service 9. Simple Interest – I = prt 10. Principal – the amount of money that is borrowed or invested 11. Rate – the percent determined by the bank 12. Time (when it comes to interest) – has to be expressed in years (if given in months you must turn it into a fraction) Functions 1. Discrete – distinct, individual points 2. Continuous – keeps going without any holes or breaks 3. Domain – all the x-values 4. Range – all the y-values 5. Linear – a straight line 6. Function – Each input has a single output 7. Input – the values substituted into a function 8. Output – the value changed by the input 9. Slope – the steepness of a line 10. Y-intercept – the point where a line crosses the y-axis