Do Now 10/26/11 Take out your HW from last night. –Text p. 80, #15-37 odds, 43-49 odds Copy HW in...
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Do Now 10/26/11 Do Now 10/26/11 Take out your HW from last night. Take out your HW from last night. – Text p. 80, #15-37 odds, 43-49 odds Text p. 80, #15-37 odds, 43-49 odds Copy HW in your planner. Copy HW in your planner. – Text p. 84, #12-40 evens, #47 Text p. 84, #12-40 evens, #47 – Quiz on sections 2-6 & 2-7 Friday Quiz on sections 2-6 & 2-7 Friday With the person next to you, complete the Exploration With the person next to you, complete the Exploration handout on “Comparing and Ordering Rational Numbers” #1-10. handout on “Comparing and Ordering Rational Numbers” #1-10.
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Transcript of Do Now 10/26/11 Take out your HW from last night. –Text p. 80, #15-37 odds, 43-49 odds Copy HW in...
Do Now 10/26/11Do Now 10/26/11Take out your HW from last night.Take out your HW from last night.– Text p. 80, #15-37 odds, 43-49 oddsText p. 80, #15-37 odds, 43-49 odds
Copy HW in your planner.Copy HW in your planner.– Text p. 84, #12-40 evens, #47Text p. 84, #12-40 evens, #47– Quiz on sections 2-6 & 2-7 FridayQuiz on sections 2-6 & 2-7 Friday
With the person next to you, complete the Exploration handout on With the person next to you, complete the Exploration handout on “Comparing and Ordering Rational Numbers” #1-10. “Comparing and Ordering Rational Numbers” #1-10.
HomeworkHomework Text p. 80, #15-37 odds, 43-49 odds Text p. 80, #15-37 odds, 43-49 odds
15) 6.415) 6.4
17) 0.87517) 0.875
19) 119) 1
21) 1.9221) 1.92
23) 0.823) 0.8
25) 0.5525) 0.55
27) 1/10027) 1/100
29) -2/2529) -2/25
31) 61/4 or 31) 61/4 or
33) 67/8 or 33) 67/8 or 8
38
4
115
35) 8.75, 35) 8.75,
37) 37)
43) yes43) yes
45) no45) no
47) yes47) yes
49) no49) no
8
68
100
55,
20
15
ObjectiveObjective
SWBAT compare and order fractions and SWBAT compare and order fractions and decimals.decimals.
Section 2-7, “Comparing and Ordering Section 2-7, “Comparing and Ordering Rational Numbers”Rational Numbers”
A A RATIONAL NUMBER RATIONAL NUMBER is a number that can be is a number that can be written as a fraction with an integer for its written as a fraction with an integer for its numerator and a nonzero integer for its numerator and a nonzero integer for its denominator.denominator.
2
1
5
3
1
12
4
31
5
2
““Rational Numbers”Rational Numbers”
Rational NumbersRational Numbers
IntegersIntegers
Whole NumbersWhole Numbers 0,1,2,3,4,5…0,1,2,3,4,5…
IntegersIntegers-3,-2,-1, 0,1,2,3…-3,-2,-1, 0,1,2,3…
Rational NumbersRational Numbers numbers that cannumbers that canrepresented as a represented as a ratio or fractionratio or fraction
0, bb
a
Whole NumbersWhole Numbers
What Do You See?What Do You See?
10
215
3
30
6
50
10
5
1
20
4
“ “EQUIVALENT FRACTIONS”EQUIVALENT FRACTIONS”
““Comparing Fractions” Comparing Fractions”
Compare the fractions and .Compare the fractions and .4
3
4
3Same denominator, Same denominator, now compare now compare numeratorsnumerators
5
4
5
4
5
5
20
15
4
4
20
16==
==Therefore, 4/5 Therefore, 4/5 isisgreater 3/4. greater 3/4.
When two fractions have different denominators, write equivalent When two fractions have different denominators, write equivalent fractions with common denominators. Then compare the numerators.fractions with common denominators. Then compare the numerators.
Compare the Following FractionsCompare the Following Fractions
4
3
6
2
12
9
4
3
12
4
6
2
4
3
6
2<
3
1
12
5
12
4
3
1
12
5
12
5
3
1
12
5>
7
2
4
1
28
8
7
2
28
7
4
1
7
2
4
1 <
““Comparing Decimals” Comparing Decimals”
0.81
To compare decimals, line up the decimal points and compare the digits To compare decimals, line up the decimal points and compare the digits from left to right until you find the place where the digits are different.from left to right until you find the place where the digits are different.
0.84
0.81
0.84
4 is greater than 1, so 0.84 is greater than 0.81
Compare the fractions. Write < or >.
0.34 0.342
0.343
0.342
3 is greater than 2, so 0.34 is greater than 0.342
Compare the fractions. Write < or >.
>><<
Order the Numbers from Least to GreatestOrder the Numbers from Least to Greatest
0.7011, 0.7, 0.71, 0.70, 0.7 0.7011, 0.7, 0.71, 0.70, 0.7
0.70110.7011
0.70.7
0.710.71
0.700.70
0.70.7
Line up numbers by Line up numbers by the decimal pointthe decimal point
0.70110.7011
0.70.7000000
0.710.710000
0.700.707070
0.70.7777777
Write all decimals in Write all decimals in the same place valuethe same place value
Place numbers in Place numbers in order from least to order from least to
greatestgreatest
0.70110.7011
0.70.7
0.710.71
0.700.70
0.70.7
0 0.5 1
Plot the numbers on a number line. Then order them from least to greatest.
2
3,8
5,67.0,2.0,
5
2
1.5
5.1,625.0,67.0,2.0,4.0
0.40.2 0.670.625 1.5
2
3,67.0,
8
5,5
2,2.0
In order them from least to greatest.
Using a Number LineUsing a Number Line
Plot the numbers on a number line. Then order them from least to greatest.
,6.0,85.0,6.0,21.0,3.0
In order them from least to greatest.
Using a Number LineUsing a Number LineF DF D
3
2,85.0,
5
3,21.0,
3
1
85.0,3
2,5
3,3
1,21.0
0 0.5 1 1.50.30.21 0.6 0.6 0.85
HomeworkHomework– Text p. 84, #12-40 evens, #47Text p. 84, #12-40 evens, #47
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