Refer to our Texas Go Math Grade 2 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 2 Lesson 15.3 Answer Key Compose Three-Dimensional Solids.
Texas Go Math Grade 2 Lesson 15.3 Answer Key Compose Three-Dimensional Solids
Explore
Circle the solids with curved surfaces. Draw an X on the solids with flat surfaces.
Answer:
HOME CONNECTION • Your child sorted the solids on this page using the attributes of the solids.
Answer:
Sphere has no faces, edges, and vertex
Cone has 2 faces, 1 edge, and 1 vertex
The cylinder has 3 faces, 3 edges, and 0 vertex
The triangular prism has 5 faces, 9 edges, and 6 vertices
Cube has 6 faces, 12 edges, and 8 vertices
The rectangular prism has 6 faces, 12 edges, and 8 vertices
Math Talk
Mathematical Processes
Name the shapes you drew an X on. Describe how they are different.
Answer:
The rectangular prism has 6 faces, 12 edges, and 8 vertices
The triangular prism has 5 faces, 9 edges, and 6 vertices
Cube has 6 faces, 12 edges, and 8 vertices
Model and Draw
Build this rectangular prism using 12 unit cubes.
The shading shows the top and front views.
top view
front view
Answer:
Share and Show
Build a rectangular prism with the given number of unit cubes. Shade to show the top and front views.
Question 1.
9 unit cubes
Answer:
Question 2.
16 unit cubes
Answer:
Problem Solving
Build a rectangular prism with the given number of 7 unit cubes. Shade to show the top and front views.
Question 3.
24 unit cubes
Answer:
Question 4.
H.O.T. Multi-Step The top, side, and front views of a rectangular prism are shown. Build the prism. How many unit cubes are used to build the solid?
___________ unit cubes
Answer:
18 cube units
Explanation:
Volume = length × width × height
= 3 × 2 × 3
= 18 cube units
Question 5.
H.O.T. Jen uses 18 cubes to build a rectangular prism. The top and front views are shown. Shade to show the side view.
Answer:
Explanation:
Volume = length × width × height
= 3 × 2 × 3
= 18 cube units
Daily Assessment Task
Choose the correct answer.
Question 6.
Apply Theo builds the first layer of a prism using 4 cubes. He adds 3 more layers of 4 cubes each. How many cubes are used for the prism?
(A) 7
(B) 16
(C) 12
Answer:
16
Theo builds the first layer of prism = 4 cubes
Question 7.
Analyze Dan built this rectangular prism. How many unit cubes did he use?
(A) 18
(B) 10
(C) 24
Answer:
24 unit cubes
Explanation:
Volume = length × width × height
= 3 × 2 × 4
= 24
Question 8.
Multi-Step Ella builds the first layer of a rectangular prism using 6 cubes. James adds 2 more layers of 6 cubes each. How many cubes are used for the prism?
(A) 8
(B) 18
(C) 12
Answer:
18
Explanation:
Ella builds first layer = 6 cubes
James adds 2 more layers = 6 × 2 = 12
2 layers of 6 cubes each = 12 + 6 = 18
Question 9.
Texas Test Prep Tyler built a rectangular prism using unit cubes. How many unit cubes did Tyler use?
(A) 27
(B) 9
(C) 18
Answer:
27 cube units
Explanation:
Number of cubes in each layer = 9
Number of layers = 3
Number of cube units = 9 × 3
= 27 cube units
TAKE HOME ACTIVITY • Ask your child to show how he or she solved on exercise in the lesson.
Answer:
Texas Go Math Grade 2 Lesson 15.3 Homework and Practice Answer Key
Shade to show the top and front views of each rectangular prism.
Question 1.
Answer:
Question 2.
Answer:
Problem Solving
Question 3.
The top, side, and front views of a rectangular prism are shown. How many unit cubes are used to build the solid?
__________ cubes
Answer:
18 cube units
Explanation:
Volume = length × width × height
= 3 × 2 × 3
= 18 cube units
Lesson Check
Choose the correct answer.
Question 4.
Ken built a rectangular prism using unit cubes. How many unit cubes did Ken use?
(A) 24
(B) 8
(C) 12
Answer:
24 cube units
Explanation:
Volume = length × width × height
= 4 × 2 × 3
= 24
Question 5.
Multi-Step Abby builds the first layer of a rectangular prism using 6 cubes. Liam adds 2 more layers. How many cubes are used for the prism?
(A) 7
(B) 18
(C) 10
Answer:
18
Explanation:
Number of cubes Abby builds first layer=6
Liam add 2 more layers= base cubes + 2nd layer cubes + 3rd layer cubes
Liam add 2 more layers= 6 + 6 + 6
= 18
Question 6.
Colby builds the first layer of a rectangular prism using 8 cubes. He adds another layer of cubes. How many cubes are used for the prism?
(A) 9
(B) 8
(C) 16
Answer:
16
Explanation:
Number of cubes Colby builds the first layer of a rectangular prism = 8
He adds another layer of cubes = base layer + another layer
cubes used = 6 +6
cubes used = 12
Question 7.
Erica builds the first layer of a rectangular prism using 2 cubes. She adds 3 more layers. How many cubes are used for the prism?
(A) 4
(B) 8
(C) 6
Answer:
8 cubes
Explanation:
Erica builds the first layer of a rectangular prism using cubes = 2
she adds 3 more layers = 3 × 2 = 6
Number of cubes = 6 + 2
Number of cubes = 8