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

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Last updated about 3 years ago
13 Questions

Draw a right angle. (show your work)
What is its measure in degrees?(Short answer)

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Draw a straight angle. (show your work)
How do you know it’s a straight angle?(Short answer)

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An equilateral triangle’s angles each have a measure of 60 degrees.

Can you put copies of an equilateral triangle together to form a straight angle?

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An equilateral triangle’s angles each have a measure of 60 degrees.

Can you put copies of an equilateral triangle together to form a right angle?

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An equilateral triangle’s angles each have a measure of 60 degrees.

Can you put copies of an equilateral triangle together to form a right angle?

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Here is a square and some regular octagons.

In this pattern, all of the angles inside the octagons have the same measure. The shape in the center is a square.

Find the measure of one of the angles inside one of the octagons.

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The height of the water in a tank decreases by 3.5 cm each day. When the tank is full, the water is 10 m deep. The water tank needs to be refilled when the water height drops below 4 m.

Write a question that could be answered by solving the equation 10 - 0.035d = 4.

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The height of the water in a tank decreases by 3.5 cm each day. When the tank is full, the water is 10 m deep. The water tank needs to be refilled when the water height drops below 4 m.

Is 100 a solution of 10 - 0.035d > 4? Write a question that solving this problem could answer.

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Use the distributive property to write an expression that is equivalent to each given expression.

-3(2x - 4)

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Use the distributive property to write an expression that is equivalent to each given expression.

0.1(-90 +50a)

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Use the distributive property to write an expression that is equivalent to each given expression.

-7(-x -9)

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Use the distributive property to write an expression that is equivalent to each given expression.

\frac{4}{5}(10y+-x+-15)

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Lin’s puppy is gaining weight at a rate of 0.125 pounds per day.  

Describe the weight gain in days per pound.

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