goal: graph, order and use real numbers. order numbers from least to greatest: 1. 0.95, 0.09,...
TRANSCRIPT
![Page 1: Goal: Graph, order and use real numbers. Order numbers from least to greatest: 1. 0.95, 0.09, 0.192, 0.79 2. 3.55, 3.3, 0.3, 3.13 3. ½, 3/5, ¼,](https://reader036.vdocuments.net/reader036/viewer/2022070605/5a4d1adc7f8b9ab059975419/html5/thumbnails/1.jpg)
SECTION 1-1: REAL NUMBERS
AND NUMBER OPERATIONS
Goal: Graph, order and use real numbers
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WARM UPSOrder numbers from least to greatest: 1. 0.95, 0.09, 0.192, 0.79
2. 3.55, 3.3, 0.3, 3.13
3. ½, 3/5, ¼, 5/16
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REAL NUMBERS
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DEFINITIONS Real number line: real numbers are pictured
as points. The numbers increase from left to right.
Origin: the point labeled 0 on a real number line.
Graph (of a number): the point on a number line that corresponds to a real number
Coordinate (of a point): the number that corresponds to a point on a number line
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EXAMPLE 1: GRAPH NUMBERS ON A NUMBER LINE
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INEQUALITY SYMBOLS A number line can be used to order real
numbers.
The inequality symbols <, <, >, > can be used to compare two numbers
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EXAMPLE 2: COMPARE REAL NUMBERS Graph the numbers -1 and -4. The
compare them using the symbol < and >.
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EXAMPLE 3: ORDERING TEMPERATURES
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CHECKPOINT:
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DEFINITIONS: Opposite (additive inverse): of any number a
is –a
Reciprocal (multiplicative inverse): of any nonzero number a is 1/a
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EXAMPLE 4: USE PROPERTIES OF REAL NUMBERS Show how you can use the distributive
property to evaluate 5 ● 203.
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SUBTRACTION AND DIVISION
Subtraction is defined as adding the opposite.
Division is defined as multiplying by the reciprocal.
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EXAMPLE 5: OPERATIONS WITH REAL NUMBERS
A. Find the difference of 4 and -9.
B. Find the quotient of -15 and 1/3 .
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CHECKPOINT: A. What is the quotient
of -16 and ½ ? B. What is the product
of -5 and 8?
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HOMEWORK:p. 6-8
15-26, 30-38, 42-49, 51-54, 63-77 odd