Name
Date
TEKS 7.2.B
LESSON
Class
Problem Solving
3-2 Adding and Subtracting Decimals
Write the correct answer.
1. In the Pacific Ocean, the Philippine
Trench is 10.05 kilometers deep. In
the Atlantic Ocean, the Brazil Basin
is 6.12 kilometers deep. How much
deeper is the Philippine Trench than
the Brazil Basin?
2. Hawaii’s Mauna Kea measures 9.75
kilometers from its base to its peak.
The base of Mauna Kea lies
5.55 kilometers below the ocean.
What is the height of the part of
Mauna Kea that is above sea level?
3. A team of mountain climbers makes
camp 1.48 kilometers above sea
level. They climb another
2.91 kilometers to the mountain’s
peak. How tall is the mountain?
4. At dawn, the temperature at the
summit of a mountain was 8.5°C.
By noon, the temperature had
increased 3.6°C. What was the
temperature at noon?
Choose the letter for the best answer.
5. In 2000, Joby Ogwyn became the
youngest person to climb each of the
seven summits. How much higher did
he climb on Vinson Massif than on
Puncak Jaya?
C 0.18 km
A 0.02 km
B 0.12 km
D 9.78 km
This table gives the heights of the tallest
mountains on each of the seven
continents.
The Seven Summits
Country
Height
(km)
NepalTibet
8.85
Argentina
6.96
United
States
6.19
Tanzania
5.90
Russia
5.64
Vinson Massif
Antartica
4.90
Puncak Jaya
New
Guinea
Mountain
Mt. Everest
Mt. Aconcagua
Mt. McKinley
Mt. Kilimanjaro
Mt. Elbrus
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
6. Mt. Kilimanjaro, Mt. Elbrus, and
Mt. Aconcagua were the first three of
the seven summits Joby climbed.
What was the total height he
climbed?
B 16.2 km
H 18.5 km
G 17.5 km
J 22 km
7. Mt. Aconcagua is about 1.3 kilometers
taller than which mountain?
A Mt. Everest
C Mt. McKinley
D Vinson Massif
B Mt. Elbrus
4.88
25
Holt Mathematics
Name
Date
TEKS 7.2.B
LESSON
Class
Problem Solving
3-2 Adding and Subtracting Decimals
Write the correct answer.
1. In the Pacific Ocean, the Philippine
Trench is 10.05 kilometers deep. In
the Atlantic Ocean, the Brazil Basin
is 6.12 kilometers deep. How much
deeper is the Philippine Trench than
the Brazil Basin?
2. Hawaii’s Mauna Kea measures 9.75
kilometers from its base to its peak.
The base of Mauna Kea lies
5.55 kilometers below the ocean.
What is the height of the part of
Mauna Kea that is above sea level?
3.93 kilometers
4.2 kilometers
3. A team of mountain climbers makes
camp 1.48 kilometers above sea
level. They climb another
2.91 kilometers to the mountain’s
peak. How tall is the mountain?
4. At dawn, the temperature at the
summit of a mountain was 8.5°C.
By noon, the temperature had
increased 3.6°C. What was the
temperature at noon?
4.9°C
4.39 kilometers
Choose the letter for the best answer.
5. In 2000, Joby Ogwyn became the
youngest person to climb each of the
seven summits. How much higher did
he climb on Vinson Massif than on
Puncak Jaya?
C 0.18 km
A 0.02 km
B 0.12 km
D 9.78 km
This table gives the heights of the tallest
mountains on each of the seven
continents.
The Seven Summits
Country
Height
(km)
NepalTibet
8.85
Argentina
6.96
United
States
6.19
Tanzania
5.90
Russia
5.64
Vinson Massif
Antartica
4.90
Puncak Jaya
New
Guinea
Mountain
Mt. Everest
Mt. Aconcagua
Mt. McKinley
Mt. Kilimanjaro
Mt. Elbrus
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
6. Mt. Kilimanjaro, Mt. Elbrus, and
Mt. Aconcagua were the first three of
the seven summits Joby climbed.
What was the total height he
climbed?
B 16.2 km
H 18.5 km
G 17.5 km
J 22 km
7. Mt. Aconcagua is about 1.3 kilometers
taller than which mountain?
A Mt. Everest
C Mt. McKinley
D Vinson Massif
B Mt. Elbrus
4.88
25
Holt Mathematics