Number Sense
Write 12,000 in scientific notation
1.2 x 104
What is the name of a shape that has four sides?
Quadrilateral
What is the theoretical probability of rolling an even number on a number cube? *answer as a fraction, decimal, and percent*
3/6 or 1/2
50%
0.5
What is the equation we use for the slope of a line that starts.... y=
y=mx+b
Solve.
23x - 19 = 1959
x = 86
What is the square root of 169?
13
A square is always a rectangle.
True
A bag has 10 marbles. 3 are blue, 5 are yellow, the rest are red. What is the probability of choosing a red marble? *answer as a fraction, decimal, and percent*
2/10
0.2
20%
The slope of a line is 1/3. A point on that line is (0,2). Write the equation of the line in y=mx+b format.
*hint m=slope; b=y-intercept*
y=1/3x+2
Solve
2x + 1/2 = -5
x=-2.75
Write 4.53 x 10-5 in standard form
0.0000453
A quadrilateral has the following three angle measurements: 149 , 45 , 78 What is the measurement of the fourth angle?
88
Describe the difference between experimental and theoretical probability.
experimental is what ACTUALLY happens after an experiment is conducted
theoretical is what SHOULD happen
What does the y-intercept mean?
the point on a line where it crosses the y-axis *or* the y-coordinate when the x-coordinate is 0.
−25 > 7.2x + 1
Solve, and show the solution on a graph.
x<36.11
<-------o
What is the absolute value of -45.9?
45.9
Triangle ABC and DEF are similar. The length of side AB is 14cm. The length of side DE is 7cm. The length of side BC is 5cm. What is the length of side EF?
2.5cm
A coin is flipped 54 times. It lands on head 20 times and tails 34 times. What is the difference between the theoretical probability of flipping heads and the experimental probability of flipping heads. (answer as a percent)
50% - 37% = 13% difference
Use the table of points to find the slope. Write your answer in simplest form.
x 1 3 5 7 9
y 5 9 13 17 21
4/2 or 2
Aliyah had some candy to give to her four children. She first took ten pieces for herself and then evenly divided the rest among her children. Each child received two pieces. With how many pieces did she start?
18 pieces of candy
-l-2l
-2
Describe how point G (-3,7) would move if it is translated using the rule (x-2, y+5).
*extra points for the location of G'*
two units left and five units up
*G'(-5, 12)*
What is the law of large numbers?
The more trials an experiment has, the closer the experimental probability will be to the theoretical probability.
**see Mrs. Ratliff's board**
Mari is going to the county fair this weekend. She has $40 to spend. Entry tickets cost $13.50. She wants to buy popcorn and a hotdog for $5.00. She wants to spend the rest of her money playing games which cost $0.50 each to play.
Write an inequality to match the following situation. You do not need to solve.
$40 >(or equal to) 18.50+0.5x