# Splash Screen. Lesson Menu Five-Minute Check (over Lesson 6–7) Main Idea and Vocabulary Example 1:Use a Map Scale Example 2:Use a Blueprint Scale Example.

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Splash Screen

Lesson Menu Five-Minute Check (over Lesson 6–7) Main Idea and Vocabulary Example 1:Use a Map Scale Example 2:Use a Blueprint Scale Example 3:Use a Scale Model Example 4:Find a Scale Factor

Main Idea/Vocabulary scale drawing scale model scale scale factor Solve problems involving scale drawings.

Example 1 Use a Map Scale MAPS On the map below, the distance between Portland and Olympia is about 1.69 inches. What is the actual distance between Portland and Olympia? Let d = the actual distance between the cities. Write and solve a proportion.

Example 1 Use a Map Scale ScalePortland to Olympia Answer: The distance between Portland and Olympia is about 103.7 miles. 0.375d = 38.87 Divide each side by 0.375. map actual map actual d ≈ 103.7

1.A 2.B 3.C 4.D Example 1 A.about 317 km B.about 325 km C.about 330 km D.about 342 km MAPS On a map of California, the distance between San Diego and Bakersfield is about centimeters. What is the actual distance if the scale is 1 centimeter = 30 kilometers?

Example 2 Use a Blueprint Scale ARCHITECTURE On the blueprint of a new house, each square has a side length of inch. If the length of a bedroom on the blueprint is inches, what is the actual length of the room?

Example 2 Use a Blueprint Scale Write and solve a proportion. ScaleLength of Room blueprint actual blueprint actual Cross products Write and as improper fractions.

Example 2 Use a Blueprint Scale Simplify. Multiply each side by 4. Answer: The length of the room is 15 feet. Multiply.

1.A 2.B 3.C 4.D Example 2 A.6 feet B.18 feet C.24 feet D.36 feet ARCHITECTURE On a blueprint of a new house, each square has a side length of inch. If the width of the kitchen on the blueprint is 2 inches, what is the actual width of the room?

Example 3 Use a Scale Model PHOTOGRAPHY A model is being created from a picture frame which has a length of inches. If the scale to be used is 8 inches = 1 inch, what is the length of the model? Write a proportion using the scale. ScaleLength model actual model actual

Example 3 Use a Scale Model Find the cross products. 38=mMultiply. Answer: The scale model is 38 inches long. Write as an improper fraction.

1.A 2.B 3.C 4.D Example 3 FURNITURE A model is being created from a child- sized rocking chair which has a height of 8 inches. If the scale to be used is 12 inches = 1 inch, what is the height of the model? A. B. C.12 in. D.96 in.

Example 4 Convert 3 feet to inches. Find a Scale Factor Find the scale factor of a blueprint if the scale is Divide out the common units. Multiply by to eliminate the fraction in the numerator.

Example 4 Find a Scale Factor Answer: The scale factor is That is, each measure on the blueprint is the actual measure.

1.A 2.B 3.C 4.D Example 4 A. B. C. D. Find the scale factor of a blueprint if the scale is 1 inch = 4 feet.

End of the Lesson

Resources Five-Minute Check (over Lesson 6–7) Image Bank Math Tools Scale Drawings Using Proportions

1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 6-7) A.90 miles B.120 miles C.270 miles D.300 miles Solve the problem by drawing a diagram. The Rockwells have driven 180 miles, which is about of the way to their family reunion. What is the total distance to their family reunion?

1.A 2.B 3.C 4.D Five Minute Check 2 Solve the problem by drawing a diagram. Tomi is eating a candy bar that is 12 inches long. She has already eaten of the candy bar. How many inches of the candy bar does she have left? (over Lesson 6-7) A. in. B. in. C.6 in. D. in.

1.A 2.B 3.C 4.D Five Minute Check 3 A.16 ounces B.9 ounces C.12 ounces D.14 ounces Solve the problem by drawing a diagram. Toki has filled or 12 ounces of his glass. Find the total capacity of his glass. (over Lesson 6-7)

1.A 2.B 3.C 4.D Five Minute Check 4 A.16% B.25% C.20% D.8% Solve the problem by drawing a diagram. If an 8-ounce serving of yogurt provides 10% of the daily requirement for calcium, what percent of the calcium requirement would a 20-ounce serving provide? (over Lesson 6-7)

1.A 2.B 3.C 4.D Five Minute Check 5 A.\$303.50 B.\$936.50 C.\$935.50 D.\$896.80 Mrs. Jackson has \$620 in her checking account after writing checks for \$39.70, \$211.80 and \$65. What was her balance before she wrote the three checks? (over Lesson 6-7)

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