a
-17
-20, 16, -2, 37
-20, -2, 16, 37
Students on an academic team took a test to enter a math competition. They could take the test twice. Some students improved their score, while others did not. The table shows the change in score for each student. Which student had the greatest overall change in his or her score?
Student Test Score Change
Joe -2
Nivea 3
Juanita -4
Li 2
Juanita
What is the opposite value of Owen’s score?
Ethan 10
Owen -16
Elliot 18
-16
Three friends started savings accounts at the same time, with the same initial deposit. The table at the right shows the total change in each friend’s account after two months. List the friends in order from least to greatest total change in bank account balance.
Owner Amount of Change
Louise -$56.84
Franklin $28.69
Hannah $89.12
Franklin, Louise, Hannah
On a math test, the students are asked to find the perimeter of rectangle STUV with vertices S(-6.5, -8.5), T(2.5, -8.5), U(2.5, 3.5), and V(-6.5, 3.5). Alberto writes that the perimeter of the rectangle is 18 units. Is he correct? Explain.
He only found the length of 2 opposite sides. The perimeter is 42 units.
(answers vary)
What integer represents a deposit of $368?
368
What is the opposite of this integer?
-(-7)
-7
Select the two ordered pairs that are 5.5 units apart.
a(-3, -3.5)
b(-1.5, 2)
c(-1.5, 2.5)
d(5, -3.5)
e(-1.5, -3.5)
B and E
A city’s low temperature for the day was 10 degrees below zero. Write the integer that represents this temperature.
-10
Ms. Conroy drew a plan for serving dinner at a graduation party. Food stations are located at
R(-3, -2),
S(4, -2),
T(4, 3)
Where should Ms. Conroy place a fourth food station if she wants to have the stations form a rectangle?
(-3, 3); Sample answer: R and S are 7 units apart; S and T are 5 units apart. A rectangle has opposite sides parallel and equal, so the fourth food station should be 5 units from R and 7 units from T.
Choose all pairs of points that are reflections of each other across both axes.
A (-3.5, 1) and (3 1/2, -1)
B(5.4, -2) and (4.5, 2)
C(-1 1/4, 3) and (1.25, -3)
D(2 3/4, 4) and (4, 2 3/4)
E(2.5, 3.5) and ( -2 1/2, 3 1/2)
A and C
What is an integer?
Whole numbers and their opposites
Using the numbers:
-0.5, 7/4, 1.25, 0.75, -9/4
Write an inequality that compares one of the fractions to one of the decimals. Then explain how the number line helps you decide which number is greater.
−0.5 is less than 7/4; −0.5 is located to the left of 7/4 on the number line. It is the lesser value.
answers varied
You draw a rectangle with vertices at (-3.5, 3), (3.5, 3), (3.5, -3), and (-3.5, -3). What is the perimeter and area of the rectangle?
Perimeter: 26 Units
Area: 42 square units