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# GED Math Chapter 1

### GED Math Chapter 1 Whole Numbers

Associative Property for addition and multiplication, three numbers can be grouped in any order; the sum or product will be the same; for any numbers a, b, and c, (a+b)+c equals a+(b+c); (ab)c equals a(bc)
Base one of the factors in a power (for example, in 3 to the power of 2 the base is 3 and the exponent is 2)
Communtative Property for addition and multiplication, numbers can be added or multiplied in any order; the sum or product will be the same; for any numbers a and b, a+b equals b+a and ab equals ba
Compatible Pairs numbers that divide evenly (for example, 80 and 4800)
Consecutive Numbers one number following the other (for example, 19 and 20)
Difference the answer to a subtraction problem
Digit one of the ten number symbols (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9)
Distributive Property when multiplying a number by a sum or difference, you may first multiply each number in the sum or difference, or you can first find the sum or difference and then multiply: a(b+c) = ab+ac; and a(b-c) = ab-ac
Dividend the number that is divided in a division problem
Divisor the number that goes into another number in a division problem
Estimate an approximate value or to find an approximate value
Even Number a whole number that is evenly divisible by 2
Exponent a number that tells the power to which a base is raised (in 3 to the power of 2 the base is three and the exponent is 2)
Factor a number that divides evenly into another number
Grouping Symbols symbols such as parentheses or the fraction bar that tell which operations to do first
Mean another name for average; the sum of a set of numbers divided by the number of numbers in the group
Median a number in the middle of a set of numbers; or the average of two middle numbers in a set
Number Sequence a list of numbers in a special order or pattern (for example, 2, 4, 6, 8, 10...). Also called a number series.
Odd Number a whole number that is not evenly distributed by 2
Place Value the number that a digit stands for (for example, in 35.6, the digit 3 stands for 30 and the digit 6 stands for 6/10ths)
Positive Number a number greater than zero
Power a product of identical factors (for example, 3 to the second power means 3x3)
Prime Number a number that is evenly divisible only by itself and 1
Product the answer to a multiplication problem
Quotient the answer to a division problem
Square Root one of two equal factors of a number, the symbol is a checkmark
Round Number a number that ends in a zero or zeros
Rounding making an estimate that is close to the original amount; can round up or down
Square a number raised to the second power