Units 2.4 - 2.7
Annoying things Ms Ohlstrom says all the time
Wild Card
Expressions
Fractions & decimals
Blast from the Past
100
Solve: 2(x + 1) = 18
x = 8
100
A proportionality always goes through the...
origin
100
What is the slope of the graph of: y=12x−19?
12
100
What am I doing when I turn 3(x-6) into 3x-18?
I am using the distributive property
100
5 / 0,001
5000
100
What is the probability of getting "tails" (klave) when you flip a coin?
Year 8 Unit 2.5
1/2 or 50%
200
Solve: 3(x -5) = 45
x = 20
200
Fill in the blank:
SHOW YOUR _______
WORK
200
What's Ms Ohlstrom's dog's name?
Francisco (Paco)
200
What am I doing when I turn 3x-18 into 3(x-6)?
I am factoring.
200
Convert 250.025 to a mixed number.
250 1/ 40
200
What year was Ms Ohlstrom born?
1984
300
Solve: (3x-5)/4 = 5
x = 25/3
300
What does the m stand for in slope-intercept form?
y-intercept
skärningspunkten i y-axeln
300
What is the square root of 225?
15
300
x2 + 18x + 81 and x2 - 81 are special types of expressions. What are they called?
A quadratic (or second degree) expression
(Bonus 100 points if your team mentioned that the second quadratic expression is also called the "difference of squares")
300
(0.15)(0.05)
0.0075
300
What is the name of George Orwell's dystopian novel that explores themes of mass surveillance and brainwashing?
1984
400
PA: There are 4 milk chocolates to every 2 dark in a box of chocolates. There are 34 dark chocolates in the box. How many milk chocolates are in the box?
68
400
When solving an equation or an inequality:
"Move all of the _____ to one side and all the _____ to the other"
Variables / constants
400
Twice a number is 18 more than 5 times a number.
Write the equation and solve
2x = 18 + 5x
x = -6
400
(4x4)2
16x8
400
Reduce to lowest terms:
102/170
3/5
400
If 200 is increased by 130 percent, what is the resulting number?
Year 8 Unit 2.3
460
500
Solve: (3 - 3x)/7 = 6
x = -13
500
What is E in the order of operations (prioriteringsreglerna)?
exponents
500
Write the following equation in slope-intercept form: 5(x + 2y) = 20
y = -1/2x + 2
500
a5-7
1
____
a2
500
9876.5 – 643.99
9,232.51
500
The net of a cylinder consists of:
Year 8 Unit 4.7
two circles and a quadrilateral
700
-9 - 5x < 21
x > -6
700
The last step to solving an equation or inequality is to(3 words):
______ ___ ________
Isolate the variable
700
(x+5)/4=7
Solve for x
x = 23
700
Simplify: -(x + 7) -2(4x + y)
-9x -7 -2y
700
0,72 - 0,62
0,13
700
You toss a coin twice.
a) What is the probability that you get heads and heads?
b) What is the probability that you get heads and tails?
Year 8 Unit 2.7
1/4 or 25%
900
Solve: 21 + x = 2(x - 6)
x = 33
900
What day is your homework due?
9A: Fridays
9B: Wednesdays
9C: Thursdays
9D: Tuesdays
900
What is the slope formula?
k = (y2 - y1) / (x2 - x1)
900
Factorize: 15x3 + 10x2y
5x(3x2+2xy)
900
9 2/14 – 3 15/21
5 3/7
900
What year was Ms Ohlstrom in grade 9?
1998 & 1999
1000
15f−23=2(4f+20)
f = 9
1000
What does the back of Ms Ohlstrom's clipboard say?
If you need a sign to spit out your gum, this is it
1000
2-1 - 1 =
-0,5
1000
x + 10 -6(x - 3x) + 4
13x + 14
1000
7/8 - 5/6 - 1/3
-7/24
1000
Purple Rain by Prince and the Revolution was the number 1 album in December 1984. Approximately how many copies have been sold?
25 million
1500
The ratio of roses to snapdragons was 4 to 5. If there were 26,000 roses on the float, how many snapdragons were there?
32,500
1500
Ms Ohlstrom's tutorial is when (day and time) and where?
Thursdays from 8.00-9.00 in room 614
1500
What's the slope of the line passing through (3,9) (5,4)
slope: -5/2
1500
What do these popular English language expressions mean? (all three must be correct!)
1. Over the moon
2. Spill the beans
3. Under the weather
1. Very happy
2. Tell something
3. To be sick
1500
Write the following fractions as a decimal:
1. 7/9
2. 3/8
3. -2/3
1. 0.778
2. 0.375
3. -0.667
1500
A circle has the radius of 6cm. A circle sector is formed with a 60 degree angle. What is the area of the circle sector?
Year 8 Unit 4.3
approximately 18,84 cm2