Transcript Whole Numbers and Decimals

Comparing and
Ordering Positive
and Negative
Numbers
Lesson 6.1
Page 218-220
10/06/08
Lesson 1.2:
pg. 219, # 1-6; pg. 220, # 12-17
10/06/08
Lesson 6.1:
Comparing & Ordering Positive and
Negative Numbers (pg. 218-220)
Standards:
12L
12R
CA Content Standards
• Number Sense 1.1***: We compare and order
positive and negative fractions, decimals, and
mixed numbers and place them on a number
line.
• Mathematical Reasoning 1.1: We analyze
problems by identifying relationships,
distinguishing relevant from irrelevant
information, sequencing and prioritizing
information, and observing patterns.
10/06/08
Lesson 1.2:
pg. 219, # 1-6; pg. 220, # 12-17
10/06/08
Lesson 6.1:
Comparing & Ordering Positive and
Negative Numbers (pg. 218-220)
Standards:
Vocabulary:
12L
12R
Vocabulary:
INTEGERS
• The set of positive whole numbers, their
opposites, and zero. (Ex: -2, -1, 0, +1, +2)
Vocabulary:
OPPOSITES
• Pairs of numbers that are the same distance on
a number line from zero. (Ex: -7 & +7)
Vocabulary:
POSITIVE NUMBERS
• Numbers whose value is greater than zero.
(Ex: +4 & +9)
Vocabulary:
NEGATIVE NUMBERS
• Numbers whose value is less than zero. (Ex: -3
& -8)
Vocabulary:
ABSOLUTE VALUE
• The distance from zero to an integer on the
number line.
• Absolute values are always neutral (neither +
nor -).
10/06/08
Lesson 1.2:
pg. 219, # 1-6; pg. 220, # 12-17
10/06/08
Lesson 6.1:
Comparing & Ordering Positive and
Negative Numbers (pg. 218-220)
Standards:
Vocabulary:
Objective:
12L
12R
Objective:
• Compare and order positive and negative
numbers.
• Math Link: You know how to compare and order
whole numbers, decimals, and fractions. Now
you will learn how to compare and order positive
and negative numbers.
10/06/08
Lesson 1.2:
pg. 219, # 1-6; pg. 220, # 12-17
10/06/08
Lesson 6.1:
Comparing & Ordering Positive and
Negative Numbers (pg. 218-220)
Standards:
Vocabulary:
Objective:
Notes & Examples:
12L
12R
Parts of a Number Line
Bigger numbers are to the
RIGHT
Smaller numbers are to the
LEFT
Place +5, -4, +2, 0, and -2 on a number line. Then
write them in order from least to greatest.
REMEMBER…
Bigger numbers are to the
RIGHT
Smaller numbers are to the
LEFT
From least to greatest: -4, -2, 0, 2, 5
Example 1.
Place +2, -0.5, 0, -3, and + 1.75 on a number line.
Then write them in order from least to greatest.
REMEMBER…
Bigger numbers are to the
RIGHT
Smaller numbers are to the
LEFT
From least to greatest: -3, -0.5, 0, +1.75, +2
Example 2.
10/06/08
Lesson 1.2:
pg. 219, # 1-6; pg. 220, # 12-17
10/06/08
Lesson 6.1:
Comparing & Ordering Positive and
Negative Numbers (pg. 218-220)
Standards:
Vocabulary:
Objective:
Notes & Examples:
pg. 219, # 7-10; pg. 220, # 19-24
12L
12R
Write the absolute value
and the opposite of -4.
-4
Absolute value (always neutral) = 4
Opposite = +4
Example 3.
Write the absolute value and
the opposite of +386, 942.
+386,942
Absolute value (always neutral) = 386,942
Opposite = -386,942
Example 4.
10/06/08
Lesson 1.2:
pg. 219, # 1-6; pg. 220, # 12-17
10/06/08
Lesson 6.1:
Comparing & Ordering Positive and
Negative Numbers (pg. 218-220)
Standards:
Vocabulary:
Objective:
Notes & Examples:
pg. 219, # 7-10; pg. 220, # 19-24
12L
Moral of the Story:
12R
The Moral of the Story
• To order positive and negative numbers, use
their position on the number line to assess
their relative value.
Math Minute # 3
13L
10/08/08
Math Minute # 3
13R
10/08/08
Math Minute # 3
① The product of 4 and 6 is ___.
② 2,463 x 0 =
③ 1, 10, 2, 9, 3, ___, ___, ___
④ 8/4=
⑤ 4 48
Math Minute # 3
Continued
⑥ 8+6÷3=
⑦ 3+43=
⑧ Apples: 4 for $ 2. How much does each
apple cost?
⑨ 5 + (3 – 1) =
⑩ The difference between 9 and 5 is ___.