5th Grade Math Challenge

A chemical’s temperature is 121.346° Fahrenheit. Rounded to the nearest tenth in degrees Fahrenheit, which measure represents the temperature of the chemical?

• 121.0°

• 121.3°

• 121.4°

• 122.0°

Rachel wrote the two number patterns shown.

• Pattern X starts with the number 3 and follows the rule “Add 5.”

• Pattern Y starts with the number 9 and follows the rule “Add 5.”

Which statement is true about Rachel’s two number patterns?

• The number in Pattern X will always be 6 less than the corresponding number in Pattern Y.

• The number in Pattern X will always be 6 more than the corresponding number in Pattern Y.

• The number in Pattern X will always be 5 more than the corresponding number in Pattern Y.

• The number in Pattern X will always be 3 times more than the corresponding number in Pattern Y.

Dominic plots a point on a coordinate grid.

• The x-coordinate is 6.

• The y-coordinate is less than the x-coordinate.

Which ordered pair could be Dominic’s point on the coordinate grid?

• (5, 6)

• (6, 5)

• (6, 7)

• (7, 6)

A polygon is a regular polygon if

• all the sides are the same length, and

• all the angles are the same measure.

Which polygon is a regular polygon?

• a rhombus without right angles

• a triangle with all sides the same length

• a trapezoid with one set of parallel sides

• a rectangle with two different side lengths

Ramona throws a baseball as far as she can a number of times. All of Ramona’s attempts are between 114 and 120 feet. Which possible distance, in yards, can Ramona throw a baseball?

• 10

• 39

• 117

• 228

A school builds a fence around all of the sides of a playground. Which measurement represents the amount of fence around the playground?

• area

• perimeter

• mass

• volume

Which statement explains how to begin to plot the point at (5, 9) on a coordinate plane?

• Start at the origin and move 5 units up.

• Start at the origin and move 5 units to the right.

• Start at the origin and move 9 units to the right.

• Start at the origin and move 9 units to the left.

Sabrina fills her fish tank with water. Which type of measurement can be used to describe the amount of water in the fish tank?

• volume

• mass

• perimeter

• area

Taj has 3 ounces of salt to make different recipes. He puts 1 4 ounce of the salt in each recipe. If Taj uses all of the salt, how many recipes can he make?

• 12