Chapter 3 Operations With Decimals Worksheet Page 13
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13CHALLENGE
A number rounded to the nearest tenth is 6.1. The same
31.
number rounded to the nearest hundredth is 6.08 and rounded to the
nearest thousandth is 6.083. Draw a conclusion as to what the original
number could be.
SELECT A TECHNIQUE
On four different days of walking on a treadmill,
32.
Mansi burned 149.6, 150.1, 150.4, and 149.8 Calories. Which of the
following techniques might Mansi use to find the average number of
Calories she burned to the nearest whole number over those four days?
Justify your selection. Then use the technique to solve the problem.
mental math
number sense
estimation
MATH
Use a model to show why 6.73 rounded to the
33.
nearest tenth is 6.7. Explain your reasoning.
NYSMT PRACTICE
6.N.27, 6.CN.3
The average annual precipitations for
On July 28, 1976, a Lockheed SR–71A
34.
35.
certain cities are given in the table.
set the record for jet speed at
2,193.167 miles per hour. What is
City
Precipitation (in.)
this speed rounded to the nearest
Omaha, NE
30.22
mile per hour?
Pittsburgh, PA
37.85
F 2,190
Kansas City, MO
37.98
G 2,192
What is the annual precipitation for
H 2,193
Kansas City to the nearest tenth?
J 2,194
A 40.0
C 37.9
B 38.0
D 37.8
Use >, <, or = to compare each pair of decimals.
(Lesson 3-2)
8.64 8.065
2.5038 25.083
12.004 12.042
36.
37.
38.
Write thirty-two and five hundredths in standard form.
39.
(Lesson 3-1)
ZOOS
Admission to a zoo is $21 for adults and $14 for children.
40.
Define variables and write an expression to find the total cost of
2 adult tickets and 3 children’s tickets. Then, find the value of
the expression.
(Lesson 1-4)
PREREQUISITE SKILL
Add or subtract.
(Page 743)
43 + 15
68 + 37
85 - 23
52 - 29
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149
Lesson 3-3 Rounding Decimals
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