Data Collecting
There are 6 kids with shorts on. 8 kids with leggings on. 7 kids with jeans on. 4 kids with other types of pants on.
What is the ratio of leggings to jeans?
8 : 7
0.462 as a fraction (simplified)
462 / 1000 =
231 / 500
(231 and 500 don't have any common factors.)
2% = 2/100 = 0.02
Our classroom needs a new rug because we've spilled spaghetti sauce, milk and juice on it. If the classroom is 15 feet wide and 22 feet long, what is the surface area of the rug we need?
15 x 22 = 330 square feet
Solve this equation.
4 + 6 x 3 - (4x2) =
4 + 18 - 8 =
22 - 8 =
14
If the base is 6 and the exponent is 3, what does this equal?
6 to the 3rd power =
6 x 6 x 6 = 36 x 6 = 216
3/4 as a decimal =
0.75
3/4 = 75/100
3 x 25 = 75
4 x 25 = 100
What is 25% of 200?
50
25% is a quarter and
a quarter of 200 is 50.
We're walking to the Firehouse in Newburyport. It's 1.93 kilometers. How many meters is that?
(BONUS: For an extra 100 points, how many centimeters is that?)
1.93 km = 1930 meters
BONUS:
1 meter = 100 cm so
1930 meters = 193,000 cm
Write this equation.
The sum of 4 and x is equal to 3 less than 12.
4 + x = 12 - 3
OR
x + 4 = 12 - 3
What is the absolute value of 4 + 2 x (6 - 2) / 8 - 12
/ = divided by
4 + 8 / 8 - 12 = 4 + 1 - 12 =
5 - 12 = -7
seven
+7
5/8 as a decimal =
5 divided by 8 = 0.625
What is 34% of 83?
28.22
.34 x 83
("of" means multiply)
The volume of a square based prism is 360 cubic cm. The area of the base is 36 square cm. What is the length, width and height of the prism?
6cm x 6cm x 10cm
6x6=36 (base) x 10 (height) = 360
Show on a number line of this inequality.
x is greater than -2 and less than 2.
open circle on -2 ___________ open circle on 2
There's a data set (4, 2, 1, 5, 9, 2, 3, 4, 12). Make a box (and whiskers) plot for this data set.
1, 2, 2, 3, 4, 4, 5, 9, 12
Q1 = 2 Q2 = 4 Q3 = 7
1--/2 4 7/-------12
3/7 as a decimal =
3 divided by 7 = 0.428571 (repeating)
42 is what percent of 168?
(First figure out what makes sense. Should you get a percent higher than 50% or lower?)
25%
42/168 = x/100
4200 divided by 168 = 25
What is the surface area of a square based pyramid if the base = 5 inches and
the height of the triangles in the pyramid = 10 inches
5 x 5 = 25 square inches +
5 x 10 (area of triangle) x 4 triangles = 200
200 + 25 = 225 square inches
Solve for x.
x less than 20 is equal to the absolute value of the product of 2 and 4.
x = 12
Write and solve this equation for n.
4 less than the product of n and 5 is greater than 36.
And now, draw a number line that shows the value of n.
5n - 4 > 36
5n - 4 + 4 > 36 + 4
5n > 40
5n/5 > 40/5
n > 8
There are 96 kids in E2. If 1/3 of them are in fourth grade,
a) how many kids is that?
b) what decimal is that?
c) what percent is that?
a) 32
b) 0.33
c) 33%
There are 25 kids in our class.
If 12.5% of 8 fourth graders have phones, 33% of the 9 fifth graders have phones and 75% of the 8 sixth graders have phones, how many total kids don't have phones?
p.s. Ali thinks kids shouldn't get phones in elementary school. :-)
Have phones: 1 fourth + 3 fifth + 6 sixth = 10
without phones: 25-10 = 15
There's a square based prism with a volume of 500 cm and a height of 5cm. What is the surface area?
Volume = L x W x H
500 = L x W x 5 (If I divide both sides by 5, then the square base = 100)
It's a square so L and W are equal. They're both 10. Top/Bottom = 100 (x2) + sides = 50 (x4) =
top/bottom 200 + sides 200 = 400 square cm
Graph the function y = x + 2. (You should use a grid board and graph at least 3 points. Then connect your points to show the line.)
x / y
1 / 3
2 / 4
3 / 5