This is a blog for Mrs. Stahlhut's 4th period algebra class at Arapahoe High School. Students will explain what they learned each day.
Monday, September 10, 2007
9/10/07 Numbers
Describe the differences and similarities between an integer and a rational number. What does it mean to take the absolute value of a number? How does that compare to taking the opposite of a number? Remember to state the assignment given in class.
An integer is a whole number and its opposite,(for every positive integer there is a negitive).
Ex: 1 is the opposite of -1, 2 is the opposite of -2 and 3 is the opposite of -3 and so on).
A rational number is a number that can be expressed as a fraction/ratio of two integers. (a/b, a and b are integers where b does NOT equal zero. Remember Mrs. Sahlhut's example that zero can be divided by n (0/n), but n can't be divided zero (n/0)?
To take the absolute value of a number means to find its distance from zero. Ex: |-2|= 2
REMEMBER: The absolute value of a number will always be positive!
Taking the absolute value of a number compares to taking the opposite of a number because they both involve finding out how many units a number is from zero.
ASSIGNMENT:pg.68 #'s 21, 22, 31, 33, 38, 44, 53, 54, and 55. DUE WED!
1 comment:
An integer is a whole number and its opposite,(for every positive integer there is a negitive).
Ex: 1 is the opposite of -1, 2 is the opposite of -2 and 3 is the opposite of -3 and so on).
A rational number is a number that can be expressed as a fraction/ratio of two integers. (a/b, a and b are integers where b does NOT equal zero. Remember Mrs. Sahlhut's example that zero can be divided by n (0/n), but n can't be divided zero (n/0)?
To take the absolute value of a number means to find its distance from zero. Ex: |-2|= 2
REMEMBER: The absolute value of a number will always be positive!
Taking the absolute value of a number compares to taking the opposite of a number because they both involve finding out how many units a number is from zero.
ASSIGNMENT:pg.68 #'s 21, 22, 31, 33, 38, 44, 53, 54, and 55. DUE WED!
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