An angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a "one-degree angle," and can be used to measure angles.
Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.
Make a line plot to display a data set of measurements in fractions of a unit (1/2, 1/4, 1/8). Solve problems involving addition and subtraction of fractions by using information presented in line plots. For example, from a line plot find and interpret the difference in length between the longest and shortest specimens in an insect collection.
Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure.
An angle that turns through n one-degree angles is said to have an angle measure of n degrees.
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28 questions
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4.MD.C.6
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4.MD.C.5.A
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For a science project, Joseph recorded the amount of rainfall each day for 2 weeks. The table below shows his data.
Which line plot correctly displays Joseph's data?
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4.MD.A.3
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4.MD.C.5.B
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4.MD.C.5.A
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4.MD.C.6
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4.MD.B.4
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Ms. Clark's class went to recess at 12:00 p.m., as shown below.
The minute hand had turned 90 degrees by the time recess ended. At what time did recess end?
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4.MD.C.5.B
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4.MD.C.7
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Mr. Fuller wants to put fencing around his rectangular-shaped yard. The width
of the yard is 55 feet and the length is 75 feet. How many feet of fencing does
Mr. Fuller need?
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4.MD.A.3
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4.MD.C.5.A
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What is the measure, in degrees, of the angle shown below?
