Open Up - Grade 7 - Mathematics - Unit 1 - Lesson 12

Elena finds that the area of a house on a scale drawing is 25 square inches. The actual area of the house is 2,025 square feet. What is the scale of the drawing?

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7.G.1

6.RP.3.d

Which of these scales are equivalent to 3 cm to 4 km? Select all that apply. Recall that 1 inch is 2.54 centimeters.

• 0.75 cm to 1km
• 1 cm to 12 km
• 6 mm to 2km
• 0.3 mm to 40 m
• 1 in to 7.62 km

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7.G.1

6.RP.3.d

These two triangles are scaled copies of one another. The area of the smaller triangle is 9 square units. What is the area of the larger triangle?

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7.G.1

6.RP.3.d

Water costs $1.25 per bottle. At this rate, what is the cost of:10 bottles?

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7.G.1

6.RP.3.d

Water costs $1.25 per bottle. At this rate, what is the cost of:20 bottles?

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7.G.1

6.RP.3.d

Water costs $1.25 per bottle. At this rate, what is the cost of:50 bottles?

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7.G.1

6.RP.3.d