Students can use the **Spectrum Math Grade 3 Answer Key Chapter 7 Lesson 7.8 Problem Solving **as a quick guide to resolve any of their doubts.

## Spectrum Math Grade 3 Chapter 7 Lesson 7.8 Problem Solving Answers Key

**Solve.**

Question 1.

The Garcia brothers are painting a wall in their I. living room. The wall measures 8 feet by 10 feet. What is the area of the wall?

The area of the wall is _____________ square feet.

Answer:

The area of the wall is 80 square feet,

Explanation:

Given measurements of the wall are 8 feet by 10 feet that is length is 8 feet and breadth is 10 feet, the area of the wall is 8 feet X 10 feet = 80 square feet.

Question 2.

Freda is putting carpet down in a room that measures 9 feet long by 10 feet wide. What is the area of the room?

The area is ______________ square feet.

Answer:

The area is 90 square feet,

Explanation:

Given measurements of room are 9 feet by 10 feet that is length is 9 feet and breadth is 10 feet , therefore the area of room is 9 feet X 10 feet = 90 square feet.

Question 3.

The zoo is building a new hippo pool that will measure 50 feet by 9 feet. What is the area of the pool?

The area is ____________ square feet.

Answer:

The area is 450 square feet,

Explanation:

Given measurements of pool are 50 feet by 9 feet that is length is 50 feet and breadth is 9 feet ,therefore the area of pool is 50 feet X 9 feet=450 square feet.

Question 4.

The Foster’s deck was almost finished. Each side of the square deck was 9 feet long. What was the area of the deck?

The area was ____________ square feet.

Answer:

The area was 81 square feet,

Explanation:

Given side of a square deck is 9 feet so area of square deck is side X side = 9 feet X 9 feet = 81 square feet.

Question 5.

The college donated land for a park. The land is 90 feet long and 9 feet wide. What is the area of the land?

The area is _____________ square feet.

Answer:

The area is 810 square feet,

Explanation:

Given the land measurements are 90 feet length and 9 feet width that is area of the land is l X b = 90 feet X 9 feet = 810 square feet.

Question 6.

Jill digs a flowerbed that is 8 meters long and 7 meters wide. What is the area of the flowerbed?

The area is ______________ square meters.

Answer:

The area is 56 square meters,

Explanation:

Given length of flowerbed is 8 meters and width of flowerbed is 7 meters that is area of flowerbed is 8 meters X 7 meters = 56 square meters .

Question 7.

Emma wants to tile her kitchen floor. How many 1 foot square tiles will she need if her floor is 10 feet long by 9 feet wide?

Emma will need _______________ tiles.

Answer:

Emma will need 90 tiles,

Explanation:

Given length of floor is 10 feet and width of floor is 9 feet that is area of floor is 10 feet X 9 feet = 90 square feet.

So therefore 90 square feet X 1 square feet = 90 tiles that is Emma will need 90 tiles.