Math 4th grade: Closure activity

Question 1

Mary is solving a geometry test, she has to classify the angle in the picture and estimate its measure.

Which of the following options contain the information Mary need to make it right?

Accepted Answer

135° - Obtuse angle

Answer

85°- Acute angle

Answer

179° - Obtuse angle

Question 2

David wants to make a description to some architects about the design he wants for his country house. The following diagram shows the lines that represent the walls.
Help David to fill the chart next to it identifying the given pair of lines as either parallel, perpendicular, or intersecting.

a) Line SB and Line RU are [blank_start]intersecting[blank_end] lines.
b) Line XZ and Line SB are [blank_start]intersecting[blank_end] lines.
c) Line CQ and Line RU are [blank_start]parallel[blank_end] lines
d) Line RU and Line LF are [blank_start]perpendicular[blank_end] lines.

Accepted Answer

intersecting

Accepted Answer

intersecting

Accepted Answer

perpendicular

Accepted Answer

parallel

Question 3

Click on each of the triangles below and classify them as ACUTE TRIANGLE, RIGHT TRIANGLE, OBTUSE TRIANGLE.

Accepted Answer

ACUTE TRIANGLE

Accepted Answer

OBTUSE TRIANGLE

Accepted Answer

RIGHT TRIANGLE

Question 4

“On average, one acre of new forest can sequester about 3267.98 kilograms of carbon annually”

According to the number in the above statement:
a)	The digit in the tens place is:  [blank_start]6[blank_end]
b)	The digit in the tenths place is: [blank_start]9[blank_end]
c)	The digit in the hundred place is: [blank_start]2[blank_end]
d)	The digit in the hundredths place is: [blank_start]8[blank_end]

Accepted Answer

6

Accepted Answer

9

Accepted Answer

2

Accepted Answer

8

Question 5

George works in a geological lab. There are different types and amounts of rocks as shown in the image.
 	
He must arrange these amounts from the smallest to greatest. Choose the order you consider right.

Accepted Answer

Granite, Schist, Obsidian, Slate.

Answer

Obsidian, Schist, Slate, Granite.

Answer

Schist, Slate, Granite, Obsidian.

Question 6

George was measuring the length of a piece of SLATE rock. He recorded the data on his computer for both measurements and the computer filled the chart below. Fill the chart as you consider the computer did it.
(Only write the number, do not write cm)

Accepted Answer

42

Accepted Answer

41.6

Accepted Answer

41.63

Question 7

Complete the chart clicking the corresponding fraction.
Check the 3 options.

Question 8

Dave bought 9.8 gallons of orange juice and used 4.02 gallons of it to make popsicles. How much orange juice does Dave have left?

Answer:  Dave has left [blank_start]5.78[blank_end] gallons of orange juice.

Accepted Answer

5.78

Question 9

A construction company bought 42.83 tons of gravel and 9.627 tons of sand. How many tons of material did the company buy in all?

Answer: The company bought  [blank_start]52.457[blank_end] tons of material in all

Accepted Answer

52.457

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Math 4th grade: Closure activity

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