This handy Math in Focus Grade 5 Workbook Answer Key Chapter 15 Practice 1 Building Solids Using Unit Cubes provides detailed solutions for the textbook questions.
Math in Focus Grade 5 Chapter 15 Practice 1 Answer Key Building Solids Using Unit Cubes
Find the number of unit cubes used to build each solid.
Question 1.
__________ unit cubes
Answer:
5 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 5 unit cubes,
So, the volume of a 5 unit cubes = 5 X (Side × Side × Side),
= 5 X (1 unit × 1 unit × 1 unit),
= 5 X (unit cubes).
Question 2.
__________ unit cubes
Answer:
7 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 7 unit cubes,
So, the volume of a 7 unit cubes = 7 X (Side × Side × Side),
= 7 X (1 unit × 1 unit × 1 unit),
= 7 unit cubes.
Question 3.
__________ unit cubes
Answer:
8 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 8 unit cubes,
So, the volume of a 8 unit cubes = 8 X (Side × Side × Side),
= 8 X ( 1 unit × 1 unit × 1 unit),
= 8 unit cubes.
Question 4.
__________ unit cubes
Answer:
6 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 6 unit cubes,
So, the volume of a 6 unit cubes = 6 X (Side × Side × Side),
=6 X (1 unit × 1 unit × 1 unit),
= 6 unit cubes.
Question 5.
__________ unit cubes
Answer:
8 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 8 unit cubes,
So, the volume of a 8 unit cubes = 8 X (Side × Side × Side),
= 8 X (1 unit × 1 unit × 1 unit),
= 8 unit cubes.
Question 6.
__________ unit cubes
Answer:
9 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 9 unit cubes,
So, the volume of a 9 unit cubes = 9 X (Side × Side × Side),
= 9 X (1 unit × 1 unit × 1 unit),
= 9 unit cubes.
Find the number of unit cubes used to build each solid.
Question 7.
__________ unit cubes
Answer:
7 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 7 unit cubes,
So, the volume of a 7 unit cubes = 7 X (Side × Side × Side),
= 7 X ( 1 unit × 1 unit × 1 unit),
= 7 unit cubes.
Question 8.
__________ unit cubes
Answer:
9 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 9 unit cubes,
So, the volume of a 9 unit cubes = 9 X (Side × Side × Side),
= 9 X (1 unit × 1 unit × 1 unit),
= 9 unit cubes.
Question 9.
__________ unit cubes
Answer:
7 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 7 unit cubes,
So, the volume of a 7 unit cubes = 7 X (Side × Side × Side),
= 7 X (1 unit × 1 unit × 1 unit),
= 7 unit cubes.
Question 10.
__________ unit cubes
Answer:
10 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 10 unit cubes,
So, the volume of a 10 unit cubes = 10 X (Side × Side × Side),
= 10 X (1 unit × 1 unit × 1 unit),
= 10 unit cubes.
Question 11.
__________ unit cubes
Answer:
15 unit cubes,
Explanation:
As a cube has all its sides of the same length.
A unit cube has all its sides of length 1 unit.
we have 15 unit cubes,
So, the volume of a 15 unit cubes = 15 X (Side × Side × Side),
= 15 X (1 unit × 1 unit × 1 unit),
= 15 unit cubes.