Number lines
Which number is the same distance from 0 as 4?
-4
Which number is the same distance from 0 as 4?
Evaluate |-9| + |4| -(-9)
A. 3
B. 2
C. 21
D. 13
C. 21
Evaluate |-9| + |4| -(-9)
A. 3
B. 2
C. 21
D. 13
Write an inequality on the board: A movie ticket costs(c) at most 12 dollars
c<=12
Write an inequality on the board: A movie ticket costs(c) at most 12 dollars
Which quadrant contains (-5, 8)?
Quadrant II
Which quadrant contains (-5, 8)?
Find the GCF of 36 and 48
12
Find the GCF of 36 and 48
Put these in order from least to greatest: -0.4, -3/5, 0, -0.08
-3/5, -0.4, -0.08, 0
Put these in order from least to greatest: -0.4, -3/5, 0, -0.08
A point is 3.75 units from 0 and is left of 0, what is the point?
-3.75
A point is 3.75 units from 0 and is left of 0, what is the point?
Which value solve x>-3? Choose all:
a. -5
b. -3
c. -2.9
d. 0
c & d
Which value solve x>-3? Choose all:
a. -5
b. -3
c. -2.9
d. 0
A point is 4 units left of the y-axis and 3 unit below the x-axis, What is its coordinate?
(-4, -3)
A point is 4 units left of the y-axis and 3 unit below the x-axis, What is its coordinate?
Find the LCM of 8 and 12
24
Find the LCM of 8 and 12
Given x = 8
Which of the following satisfy x < __?
A. -10
B. 10
C. -5
D. 8
B
Given x = 8
Which of the following satisfy x < __?
A. -10
B. 10
C. -5
D. 8
Find x with |x| = 24 + (-13)
x = 11. 11 units from 0
Find all numbers x with |x| = 24 + (-13) and explain why these are two answers
A ride requires h >= 54 inches. Is a student who is exactly 54 inches allowed? Explain
Yes, The symbol >= means greater than or equal to, so 54 is included
A ride requires h >= 54 inches. Is a student who is exactly 54 inches allowed? Explain
Points A(2, -6) and B(2,5) are on a vertical line. What is the distance AB?
11 units
Points A(2, -6) and B(2,5) are on a vertical line. What is the distance AB?
You have 42 pencils and 56 erasers. Each supply bag could contain 1 pencil and 1 eraser. What is the greatest number of identical supply bags you can make?
14 bags
You have 42 pencils and 56 erasers. Each supply bag could contain 1 pencil and 1 eraser. What is the greatest number of identical supply bags you can make?
Draw number line on the board to represent x <= 8
Student response
Given x=-2, which of the following is less than than x
a. |2|
b. |-2|
c. -1
d. -3
d. -3
Given x=-2, which of the following is greater than x
a. |2|
b. |-2|
c. -1
d. -3
Write one inequality for " the temperature is below -4 degree C." Then name three possible temperatures.
t<-4
Examples: -5degree C, -6 degree C, -10 degree C
Reflect point P(-7, 3) across the x-axis(change of x, but not y). What is the new point?
(-7, -3)
Reflect point P(-7, 3) across the x-axis. What is the new point?
Two lights blink every 6 seconds and 10 seconds. If they blink together now, when will they blink again?
30 seconds
Two lights blink every 6 seconds and 10 seconds. If they blink together now, when will they blink again?
True or False: If a<b, then |a| < |b|.
False. Example: -10 < 2, but |-10| = 10 and |2| = 2, so 10 is not less than 2
True or False: If a<b, then |a| < |b|.
A submarine is at −45 feet below sea level. A drone is flying 32 feet above sea level. How far apart are the submarine and the drone?
77 feet apart.
A submarine is at −45 feet below sea level. A drone is flying 32 feet above sea level. How far apart are the submarine and the drone?
A number x is greater than -6 and less than 2, select all the answers that satisfy the situation.
a. x>-6
b. x<= -6
c. x < 2
d. x = 2
a & c
A number x is greater than -6 and less than 2, select all the answers that satisfy the situation.
a. x>-6
b. x<= -6
c. x < 2
d. x = 2
A rectangle has vertices (-2,1), (4,1), (4,-3), (-2,-3). What is its area?
24 square units. Width = 6 and height = 4
A rectangle has vertices (-2,1), (4,1), (4,-3), (-2,-3). What is its area?
A bakery gives a cookie every 4th customer and a muffin every 6th customer. Among customers 1-50, how many get both?
4 customers: 12th, 24th, 36th, 48th
A bakery gives a cookie every 4th customer and a muffin every 6th customer. Among customers 1-50, how many get both?