DEO
TEXTBOOK DEFINTION
ME (COMMENTS, QUESTIONS, ETC)
NATURAL NUMBERS (COUNTING NUMBERS)-
What we count with.
O
-THE NUMBER 1 TO INFINITY (1,2,3,4…)
WHOLE NUMBERS
O
Learned these in fifth grade.
-NON FRACTION NUMBERS ABOVE 0
INTEGERS,
O
AN INTEGER IS A NUMBER THAT CAN BE WRITTEN
WITHOUT A FRACTION OR DECIMAL
Learned in sixth grade.
CLOSED
O
THE CLOSED INTERVAL [A,B] OF REAL NUMBERS.
Reminds me of a cage.
RATIONAL NUMBERS
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ALL POSITIVE AND NEGATIVE INTERVALS
Reminds me of things you can work with.
IRRATIONAL NUMBERS,
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REAL NUMBER THAT CAN BE WRITTEN AS A SIMPLE
FRACTION
Makes me think of weird numbers.
TERMINATING DECIMALS
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NUMBER THAT’S DECIMALS DO NOT GO ON FOREVER
Learnt this recently
DEO
REPEATING DECIMALS
O
NUMBER THAT’S DECIMAL REPEATS ITSELF FOREVER
Always think of 0.3333…
REAL NUMBERS
O
ALL RATIONAL NUMBERS
Continuous number line.
VENN DIAGRAM
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CHART REPRESENTING DIFFERENCES AND
SIMILARITES BETWEEN TWO THINGS
Think of the overlapping circles.
CLOSURE,
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THE SUM ALWAYS ENDS UP EVEN
Closed cage.
ADDITIVE IDENTITY
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ADDING ZERO TO A NUMBER DOES NOT CHANGE THE
NUMBER
Adding nothing.
ADDITIVE INVERSE
O
ADDING A TO THE NUMBER EQUALS ZERO (-5+5=0)
Think of number lines.
MULTIPLICATIVE IDENTITY
O
MULTIPLYING A NUMBER BY 1 LEAVES IT
UNCHANGED
Multiplication tables.
MULTIPLICATIVE INVERSE.
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WHEN MULTIPLYING A FRACTION WITH THE SAME
DENOMINATOR ATS THE WHOLE EQUALS 1 (1/8*8=1)
Agriculture class when we learned measurements on the ruler.