7th Math 1.20 Classwork A

Last updated over 2 years ago
5 questions
1

Poolside--The Milton Motel's designers want to add a pool. A small legend on the blueprint states that 2 inches in the drawing corresponds to 5 yards in real life.

How many square yards are covered by water (just the blue portion) in the pool?

"The area of the pool is..."

CFS:
#1: Accurately computes the scale factor
#2: Accurately computes actual measurements using the scale factor
#3: Accurately computes actual area using the correct area formula

1

Top of the Tower--The blueprints for a luxury penthouse apartment in New York state that 3 centimeters corresponds to an actual length of 22.5 feet.

a) What is the area of the bedroom?

"The actual area of the bedroom is..."

CFS:
#1: Accurately computes the scale factor
#2: Accurately computes actual measurements using the scale factor
#3: Accurately computes actual area using the correct area formula

1

Sibling Rivalry--Abel, Babel, and Cabel are three brothers who live in a house together. 3 inches in the scale drawing corresponds to 36 feet in the actual home.

Babel says, "My room is tiny. It's not even 100 square feet." Is this true? Explain.

"Babel is (right / wrong) because..."

CFS:
#1: Accurately computes the scale factor
#2: Accurately computes actual measurements using the scale factor
#3: Accurately computes actual area using the correct area formula

1

SPICY--Try if you have time

Cramped--Use the same floor plan where 3 inches in the scale drawing corresponds to 36 feet in the actual home.

Babel also complains and says, "My room isn't even 4 times the area of our tiny closet!"

Is Babel right? Explain. You can reuse the area of Babel's room from #3.

CFS:
#1: Accurately computes the scale factor
#2: Accurately computes actual measurements using the scale factor
#3: Accurately computes actual area using the correct area formula

4

Magnifique--Bincent Ban Boe was a famous painter and mathematician. He was known for sketching self-portraits on small pieces of paper before completing the final painting on a large canvas.
Bincent made a note that 4 centimeters on his sketch corresponds to 60 inches on the actual portrait.

If the dimensions of the small sketch are 3 cm by 5 cm, how many square inches would he have to cover with paint in his final portrait?

"He would have to paint over..."

CFS:
#1: Accurately computes the scale factor
#2: Accurately computes actual measurements using the scale factor
#3: Accurately computes actual area using the correct area formula

Awesome work! You can...
1) Study any of your old lessons to get ready for the assessment tomorrow

2) Practice any Ratio/Proportional relationship skills on IXL to get ready for tomorrow