Chapter 3 Operations With Decimals Worksheet Page 7
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13Decimals that name the same number are called equivalent
decimals. Examples are 0.8 and 0.80.
0.8 = 0.80
=
eight tenths = eighty hundredths
0.8
0.80
When you annex, or place zeros to the right of the last digit in a
decimal, the value of the decimal does not change. Annexing zeros is
useful when ordering a group of decimals.
Order Decimals
2
Order 15, 14.95, 15.8, and 15.01 from least to greatest.
Next, annex zeros so
Finally, compare
First, line up the
all numbers have the
and order using
decimal points.
same final place value.
place value.
Check For Reasonableness
15
→
15.00
14.95
You can check the
14.95
14.95
15.00
→
reasonableness of the order
15.8
→
15.80
15.01
by using a number line.
15.01
→
15.01
15.80
The order from least to greatest is 14.95, 15, 15.01, and 15.8.
Order 35.06, 35.7, 35.5, and 35.849 from greatest to least.
b.
Example 1
Use >, <, or = to compare each pair of decimals.
(p. 142)
0.4
0.5
0.38
0.35
1.
2.
2.7
2.07
25.5
25.50
3.
4.
POPULATION
Australia and Botswana are among the least populated
5.
countries in the world. In Australia, about 6.76 people live in each
square mile, while 6.84 people live in each square mile in Botswana.
Which country has the greater number of people per square mile?
BASEBALL
The five highest career
Example 2
6.
(p. 143)
batting averages in Major League
Highest Career MLB Batting Averages
Baseball (MLB) are listed at the
right. Order these averages from
0.346
0.345
0.366
0.356
0.356
least to greatest.
Source: Major League Baseball
143
Lesson 3-2 Comparing and Ordering Decimals
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