10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt Algebraic Expressions Algebraic Equations Circles Coordinate Grids Potpourri

The length of one side of the square to the left is ‘s’ inches. Of the following expressions, this is the one that could be used to find the perimeter of the square. A. 2s B. 4 + s C. 2 + s D. 4s s

What is D. 4s? Explanation: To find the perimeter you could also use the expression s + s + s + s, which means the same as 4 times s or 4s.

The rectangle to the left has the dimensions shown. This expression could be used to find the area of the rectangle A. a x b B. a + b C. a + a + b + b D. 2a + 2b b a

What is A. a x b? Explanation: One way to find the area of a rectangle is to multiply the length and width.

Bill is ‘x’ years old. His brother is 6 years older than Bill is. This expression is how old Bill’s brother is. A. 6x B. x + 6 C. x – 6 D. x ÷ 6

What is B. x + 6?

Judy likes to walk around her block. It takes her 12 minutes to walk around her block one time. This expression could be written to find how long it takes her to walk around her block ‘b’ times.

What is 12b? (or 12 x b)

r The radius of the circle is shown by the line segment ‘r’ in the picture to the left.. Of the following expressions, this one could be used to name the diameter. A. r + 2 B. r ÷ 2 C. r + r + r + r D. 2r

What is D. 2r?

xy This equation could be used to tell the relationship between x and y in the table above: A. x + 1 = y B. 6x = y C. x + 5 = y D. x + 2 = y

What is C. x + 5 = y?

Empire School bought new computers and printers. The computers and printers together cost $1600. The printers cost $350. If the cost of the computers is ‘c’ dollars, this equation could be used to find the cost of the computers. A. 350 – c = 1600 B = c C c = 1600 D. 350 ÷ c = 1600

What is C c = 1600?

Joan bought 5 cans of pop which cost a total of $10. If ‘p’ represents the cost of one can of pop, this equation could be used the find the cost of one can. A. 5 + p = 10 B. 5 – p = 10 C. 10 – 5 = p D. 10 ÷ 5 = p

What is D. 10 ÷ 5 = p?

A cheese pizza costs $7. Each topping has an additional cost. This table shows the cost of a cheese pizza with additional toppings. Number of Toppings (n) Total Cost of the Pizza (c) This equation below represents the situation. A. c = n + 2 B. c = n + 8 C. c = (2 + n) + 7 D. c = 2n + 7

What is D. c = 2n + 7?

xy This equation below shows the relationship between x and y in the table above. A. x + 8 = y B. 3x - 4 = y C. 2x + 3 = y D. x + 13 = y

What is C. 2x + 3 = y?

Of the following statements, this is the one that is true. A. The diameter is AB. B. The diameter is AC. C. The only radius is BD. D. The radius is two times the length of BC.

What is B. The diameter is AC?

The diameter of the pictured circle is 10 inches. This is the radius of the same circle. 10 in.

What is 5 inches?

The diameter of the pictured circle is 6 inches. This is approximately the circumference of the circle. A. 3 inches B. 12 inches C. 15 inches D. 18 inches

What is D. 18 inches?

The circumference of the circle above is 24 centimeters. Of the choices below, this is the approximate radius of the circle. A. 12 centimetersC. 72 centimeters B. 8 centimetersD. 4 centimeters

What is D. 4 centimeters? Explanation: If the circumference is 24 centimeters, the diameter must be about 8 inches because the circumference is about three times greater than the diameter (24 ÷ 3 = 8). If the diameter is 8 centimeters, the radius must be 4 centimeters because the radius is always half of the diameter.

Of the choices below, this is a reasonable estimate of the circumference of the circle. A. about 4 inches B. about 16 inches C. about 24 inches D. about 48 inches

What is D. about 48 inches? Explanation: If the radius is 8 inches, the diameter is 16 inches. The circumference of a circle is about 3 times greater than its diameter. 16 x 3 = 48.

An island was outlined on a coordinate grid map and different landmarks were placed on the map. This is the landmark that is at (5, 7) on the map. A. Movie Theater B. Post Office C. Fire Department D. Hospital

What is A. Movie Theater?

Paths on a Grid The dot on the grid marks the point where the elementary school is located. This is the coordinate pair for the dot on the grid.

What is (-1, 0)?

This is the point that is at (-3, 2) on the grid to the left. A. Point A B. Point B C. Point C D. Point D A B C D

What is the A. Point A?

Mark was drawing a rectangle on a the grid piece of paper to the left. He put the 3 dots on the paper that are shown. This is where he should put the fourth dot so he can connect the dots to make his rectangle.

What is (-3, -2)

This is the perimeter of the rectangle pictured on the grid. = 1 sq. cm.

What is 10 centimeters?

This is the smallest of the four marked numbers.

What is -20?

This rule describes the input-output function. A. double the input, and add 1 B. add 1 to each input number C. add 2 to each input number D. divide the input by 2 and add 4 InputOutput

What is D. Divide the input by 2 and add 4?

Day Temperature (C) This is the mean of the low temperatures

What is 5 degrees Celsius?

This is the ratio of dramas to action movies. A. 2:3C. 4:3 B. 3:4D. 3:2

What is C. 4:3?

The width of the rectangle below is 2 ¾ inches. The length of the rectangle is 3 ½ inches. This is the perimeter of the rectangle.

What is 12 ½ inches?