Wednesday 10/7 Practice

Presentation

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Mathematics

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7th Grade

•

Medium

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CCSS

7.G.A.1, 7.RP.A.2C, 7.RP.A.2B

Standards-aligned

Megan Whitaker

Used 1+ times

FREE Resource

4 Slides • 10 Questions

Wednesday 10/7 Practice

Using Ratio Proportions to solve for Scaled Drawings with different units

Steps for Writing A Proportion Using Scale Factor

Set up the problem with the given ratio between the 2 different units to equal the new proportion (including the distance given in the problem.
Cross out the unit names that are repeated & keep the unit byitself.
Cross multiply with the diagonal given numbers
Divide with the number in the diagonal by itself.

Multiple Choice

Solve for x

x = 16

x = 28

x = 1/26

x = 26

Multiple Choice

Whittemore Park Middle School is 30 feet tall. A 5 inch tall scale model of the school was made by the art club. What is the scale of the model?

one inch = 6 feet

one inch = 6 inches

one inch = 72 inches

Multiple Choice

What is a scale drawing?

A drawing that shows a real object enlarged or reduced

A drawing of the weight of an object

A life size drawing of an object

A drawing that shows all the sides of a building

Multiple Choice

Robbie made a scale drawing of a neighborhood park. A soccer field in the park is 14 inches long in the drawing. The actual field is 98 yards long. What is the scale of the drawing?1 inch = _ yards

1372

Multiple Choice

On a map, Memphis, Tennessee, and Jackson, Mississippi, are 5 inches apart. The distance between the cities is actually 210 miles.

What scale was used to create the map?

42 inches = 1 mile

1 inch = 42 miles

40 inches = 1 mile

1 inch = 40 miles

Multiple Choice

From Denver to Chicago = 3 in. If the scale is 1 in = 300 miles, find the actual distance.

300 miles

1000 miles

900 miles

600 miles

Multiple Choice

Scale is 1cm = 8km. Hatboro and Smithville are 24cm apart on the map, what is the actual distance between the 2 cities?

87 km

216 km

33 km

192 km

Multiple Choice

The scale drawing car length is 3 cm. If the scale is 1 cm:4 ft, what is the actual car length?

12 feet

16 feet

10 feet

4 feet

Using Proportions to find scale factor

Write ratio that compares the two amounts
Compare the quantities using the same units.
Simplify to get the scaled factor

Multiple Choice

A scale drawing that measures 8 units wide and an original that measures 4 units wide has a scale factor of...

2:1

8:1

bigger

1:2

Multiple Choice

Robbie made a scale drawing of a neighborhood park. A soccer field in the park is 14 inches long in the drawing. The actual field is 98 yards long. What is the scale of the drawing?1 inch = _ yards

1372

Wednesday 10/7 Practice

Using Ratio Proportions to solve for Scaled Drawings with different units

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