11/30/09 compare decimals #1
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11/30/09 Compare Decimals #1
Today’s Plan:-New Trimester-Lesson-Assignment
Learning Target: -I will learn to compare and order decimals.
LT: I will learn to compare and order decimals.
New trimester!Start with lesson #1 again.
11/30/09 Compare Decimals #1
Today’s Plan:-New Trimester-Lesson-Assignment
Learning Target: -I will learn to compare and order decimals.
LT: I will learn to compare and order decimals.
Warm Up:Write each decimal as a fraction in lowest terms.
(You may use your fraction, decimal, percent wheel.)
A) 0.01 B) 0.1 C) 0.33
D) 0.25 E) 0.66 F) 0.4
Place Thousands HundredsTens Ones · Tenths Hundredths Thousandths
Place Value:
PlaceValue
1,000 100 10 1 0.1 =1
10
0.01 =1
100
0.001 =1
1,000
11/30/09 Compare Decimals #1
Today’s Plan:-New Trimester-Lesson-Assignment
Learning Target: -I will learn to compare and order decimals.
If 1 meter = 1.00 what would .5 be? .01? .06? .56? .001?
To compare decimals, line up the decimal points and compare digits from left to right until you find the place where the digits are different.
Course 2
3-10 Comparing and Ordering Rational Numbers
11/30/09 Compare Decimals #1
Today’s Plan:-New Trimester-Lesson-Assignment
Learning Target: -I will learn to compare and order decimals.
Compare the decimals. Write < or >.
Additional Example 2: Comparing Decimals
0.427 0.425
0.427
0.425
0.427 > 0.425
Line up the decimal points.The tenths and hundredths arethe same.Compare the thousandths:
7
5
7 > 5.
Course 2
3-10 Comparing and Ordering Rational Numbers
Compare the decimals. Write < or >.
0.535 0.538
0.535
0.538
0.535 < 0.538
Line up the decimal points.The tenths and hundredths arethe same.Compare the thousandths:
5
8
5 < 8.
Try This: Example 2
Course 2
3-10 Comparing and Ordering Rational Numbers
Order the numbers from least to greatest.
Additional Example 3: Ordering Fractions and Decimals
45
0.93, and 0.9 ,
45 = 0.80
Graph the numbers on a number line.
0 0.2 0.4 0.6 0.8 1
0.93
Write as decimals with the same number of places.
0.93 = 0.93 0.9 = 0.90
Course 2
3-10 Comparing and Ordering Rational Numbers
Additional Example 3 Continued
The values on a number line increase as we move from left to right.
0.80 < 0.90 < 0.93
45
, 0.9, 0.93
Place the decimals in order.
Order the numbers from least to greatest.45
0.93, and 0.9 ,
0 0.2 0.4 0.6 0.8 1
0.93
Course 2
3-10 Comparing and Ordering Rational Numbers
Order the numbers from least to greatest.
Try This: Example 3
35
0.84, and 0.7 ,
35 = 0.60
Graph the numbers on a number line.
0 0.2 0.4 0.6 0.8 1
0.84
Write as decimals with the same number of places.
0.84 = 0.84 0.7 = 0.70
Course 2
3-10 Comparing and Ordering Rational Numbers
Try This: Example 3 Continued
The values on a number line increase as we move from left to right.
0.60 < 0.70 < 0.84
35
, 0.7, 0.84
Place the decimals in order.
Order the numbers from least to greatest.35
0.84, and 0.7 ,
0 0.2 0.4 0.6 0.8 1
0.84
Course 2
3-10 Comparing and Ordering Rational Numbers
11/30/09 Compare Decimals #1
Today’s Plan:-New Trimester-Lesson-Assignment
Learning Target: -I will learn to compare and order decimals.
Page 176 #5-8, 20-25
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