5 Minute Check. Write each fraction as a decimal. Use bar notation if needed. 7 1. 15 5 2. - 2 22 Write each decimal as a fraction. 3. - 0.15 4. – 7.75 5. 12.54. 5 Minute Check. Write each fraction as a decimal. Use bar notation if needed. 7 1. 1 5. 5 Minute Check. - PowerPoint PPT Presentation
Tuesday, Oct 30
5 Minute CheckWrite each fraction as a decimal. Use bar notation
if needed. 71. 15 52. -2 22
Write each decimal as a fraction.
3. - 0.15
4. 7.75
5. 12.545 Minute CheckWrite each fraction as a decimal. Use bar
notation if needed. 71. 155 Minute CheckWrite each fraction as a
decimal. Use bar notation if needed. 71. 15 = 0.46
0.46 15 ) 7.000 -60 100 -90 100 5 Minute CheckWrite each
fraction as a decimal. Use bar notation if needed. 52. -2 22
5 Minute CheckWrite each fraction as a decimal. Use bar notation
if needed. 52. -2 22 = - 2.227
0.227 22 ) 5.000 -44 60 -44 160 -154 65 Minute CheckWrite each
decimal as a fraction.
3. - 0.15
5 Minute CheckWrite each decimal as a fraction. 15 33. - 0.15 =
- 100 = - 20
5 Minute CheckWrite each decimal as a fraction.
4. 7.75
5 Minute CheckWrite each decimal as a fraction. 75 34. 7.75 = -
7100 = - 7 4
5 Minute CheckWrite each decimal as a fraction.
5. 12.545 Minute CheckWrite each decimal as a fraction. 54 275.
12.54 = 12 100 =1250Monday, Nov 11Lesson 5.5
Compare and Order Rational NumbersCompare and Order Rational
NumbersObjective: To understand how to compare and order all
rational numbers.
Compare and Order Rational NumbersAt the end of this lesson you
should be able to answer the following question.
How do we compare fractions and decimals?
Compare and Order Rational NumbersThe number line can be used to
compare and order all rational numbers. A negative number is always
less than a positive number.
Compare and Order Rational NumbersRule #1- A negative number is
always less than a positive number.
Compare and Order Rational NumbersRule #1- A negative number is
always less than a positive number.
Rule #2 When comparing fractions, the denominators must be the
same. Then just compare the numerators.
Compare and Order Rational NumbersRule #1- A negative number is
always less than a positive number.
Rule #2 When comparing fractions, the denominators must be the
same. Then just compare the numerators.
Rule #3 When comparing a decimal and a fraction, one form must
be converted to the other. Either convert the fraction to a decimal
or vice versa. Compare and Order Rational NumbersWrite an
inequality with -1.2 and 0.8
Compare and Order Rational NumbersWrite an inequality with -1.2
and 0.8-1.2 < 0.8
-1.2 0.8
Since -1.2 is negative and 0.8 is positive, 0.8 must be
greater.
Compare and Order Rational NumbersWrite an inequality with -1.40
and -1.25
Compare and Order Rational NumbersWrite an inequality with -1.40
and -1.25-1.40 < -1.25
-1.40 -1.25
Since -1.25 is to the right of -1.40 it is greater.
Compare and Order Rational Numbers 3 5Which is greater - 8 or
-16?
How do we do this?
Compare and Order Rational Numbers 3 5Which is greater - 8 or
-16?
Rule #2 When comparing fractions, the denominators must be the
same. Then just compare the numerators.
How can we make the denominators the same?
Compare and Order Rational Numbers 3 5Which is greater - 8 or
-16?
3 x 2 5 - 8 x 2 -16
6 5 - 16 < -16
Compare and Order Rational Numbers 7 4 10 5
Can we multiply the smaller denominator by something to get the
larger denominator?
Compare and Order Rational Numbers 7 4 10 5
Can we multiply the smaller denominator by something to get the
larger denominator? Yes, 5 x 2 = 10.
Compare and Order Rational Numbers 7 4 10 5
7 4 x 2 10 5 x 2
7 8 10 < 10
Compare and Order Rational Numbers 8 - 0.51 -15
How do we do this?
Compare and Order Rational Numbers 8 - 0.51 -15
Rule #3 When comparing a decimal and a fraction, one form must
be converted to the other. Either convert the fraction to a decimal
or vice versa.
Which do we convert?
Compare and Order Rational Numbers 8 - 0.51 -15
0.53 We can stop here, why? 15 ) 8.00 -75 50 -45
Compare and Order Rational Numbers 8 - 0.51 -15
0.53 Because the second digit is different. 15 ) 8.00 -75 50
-45
-.051 > - 0.53
Compare and Order Rational Numbers - 3 -3.625
Do this on your own.
Compare and Order Rational Numbers - 3 -3.625 0.625 8 ) 5.000
-48 20 -16 40 -40 0 -3.625 = -3.625
Compare and Order Rational Numbers 0.413
Do this on your own.
Compare and Order Rational Numbers 0.413
0.42 I can stop here, why? 7 ) 3.00 -28 20 -14 6
Compare and Order Rational Numbers 0.413
0.42 Because the second digit is different. 7 ) 3.00 -28 20 -14
6
Compare and Order Rational Numbers 0.413 0.42 > 0.413, so
> 0.413
Compare and Order Rational Numbers Order the set from least to
greatest. 22 1 {- 2.46, -2 25 , -2 10 } Do this on your own.
Compare and Order Rational Numbers Order the set from least to
greatest. 22 1 {- 2.46, -2 25 , -2 10 } 22 x 4 88 22 88 25 x 4 =
100, so -2 25 = -2 100 = -2.88
1 x 10 10 1 10 10 x 10 = 100, so -2 10 = -2 100 = -2.10
Compare and Order Rational Numbers Order the set from least to
greatest. 22 1 {- 2.46, -2 25 , -2 10 } 22 x 4 88 22 88 25 x 4 =
100, so -2 25 = -2 100 = -2.88
1 x 10 10 1 10 10 x 10 = 100, so -2 10 = -2 100 = -2.10
22 1 -2 25 , -2.46, -2 10
Compare and Order Rational Numbers How do we compare fractions
and decimals?
Compare and Order Rational NumbersAgenda Notes
Homework Homework Practice 5-5Due Tuesday, Nov 12
Chapter 5 Test Friday, Nov 15After School Help SessionThursday,
Nov 14 2:15 3PM
