Transcript Slide 1 - Beachwood City Schools

0.25
x 0.3
0.075
To figure out where the decimal
point goes in the answer, count
the number of digits AFTER the
decimal point in the problem.
3 digits after the decimal point
3 digits after the decimal point
Remember the correct order of operations:
42 - 4
16 - 4
4
~Parenthesis
~Exponents
~Multiplication & Division (left to right)
~Addition & Subtraction (left to right)
8 feet wide
85
x 8
700
85 feet
long
When going from Figure 4 to
Figure 5, you add five dots.
Add Add Add Add Add
2
3
4
5
6
Notice the pattern in the chart…
For each new figure, you’re adding one
more than you did the time before.
In the associative property, the order the
numbers & letters appear in does not change.
Instead, the parenthesis are moved to
a different location.
A 30% discount means that the
store pays 30% of the cost,
while the customer pays 70%.
Sam’s Music
$240
x .70
$168
Melody Music
Sam’s is the
better deal.
$240
45
$195
The $45 discount from Melody Music
means you just simply subtract.
The MODE is the most
common number.
It’s possible to have more
than one mode. This
happens when there’s a tie
for first place.
Scalene: No sides are congruent.
Isosceles: 2 sides are congruent.
Equilateral: All sides are congruent.
Acute: All angles are less than 90.
Right: One angle is equal to 90.
Obtuse: One angle is greater than 90.
Cost = (6)(b) + (12)(v)
Cost = (6)(4) + (12)(5)
Cost =
24
Cost = $84
+
60
The word CONSTANT means that
the numbers must be decreasing at
the SAME RATE each time.
In this table, the output
numbers are decreasing
by 2 each time!
Answers will vary slightly.
Here’s what I came up with…
I decided this block would be 10
meters tall and 10 meters wide.
80 meters long
50 meters
wide
2
1
3
5
2 + 1 + 3 + 5 = 11
Candy bars
sold to friends
Total candy
bars sold
4x + 18 = 38
4x - 18 k -18
4x
4
= 20
4
x = 5
Factors of 12
Factors of 30
1 2 3 4 6 12
1 2 3 5 6 10 15 30
1
x
30
12 xx 12
2
x
15
6
35 both
xx 10
3 x 4number that appears in
The largest
6 lists is 6.
The times have been coming
down slowly over the past
forty years. There haven’t
been a lot of big jumps in
either direction.
Way too slow.
Way too fast.
A good estimate
would be in the
mid-53’s.
To stadium
5:20 PM
To zoo
(every :10)
(every :16)
4:00
4:10
4:20
4:30
4:40
4:50
5:00
5:10
5:20
5:30
4:00
4:16
4:32
4:48
5:04
5:20
5:36
5:52
6:08
6:24
Jim’s savings are definitely increasing.
Also, his savings are increasing by
$25 each month. This is a constant
rate of increase.
82 x 2
Do the parenthesis first.
64 x 2
Exponents come next.
128
And finally, you multiply.
3 units
4 units
A 1 to 3 ratio would
mean that the new
triangle would have to
have a base of 12 units
and a height of 9 units.
The perimeter of the new space is
twice as large as the old perimeter.
The area of the new space is four
times as large as the old area.
25’
50’
15’
30’
160/80 = 2
1500/375 = 4
Perimeter = 15+25+15+25
Perimeter = 30+50+30+50
Area = 15
Area = 30
x
25
x
50
Original play space:
New play space:
Perimeter = 80 inches
Area = 375 inches2
Perimeter = 160 inches
Area = 1500 inches2
4 7/8” is just barely
less than 5” long.
20” long
If the smaller pieces were exactly 5” long,
we could cut the 20” ribbon into 4 pieces.
We would still only be able to
cut the ribbon into 4 pieces.
20
20
20
20
Dividing the pie chart
into quarters gives us
20 votes each.
(80 votes total)
80/4 = 20
Park received about half of the 20 votes.
This would be right around 10 votes.
8:6
(Divide them both by 2.)
4:3
Amount raised
$450
Goal
$300
= 1.50
150%
The advantage of the bar graph The advantage of the circle graph
is that the cafeteria workers
is that the information appears in
can see how many pizzas to
percentages. It’s a little easier
make, how many tacos to make,
to compare the food items with
etc. The number of students is each other in this format. Also,
clearly marked.
if the students’ food choices start
to change, it will be more
noticeable on the circle graph.
This represents 2 ¼ units.
Each of these ovals is ¾.
At this rate, here’s what would happen…
1½ hours
$120
3 hours
$240
4½ hours
$360
6 hours
$480
Area of a triangle = ½(base)(height)
Area of a triangle = ½ (30) (26)
30 x 20 would be 600. ½ of 600 is 300.
An answer of 300 would be too small.
30 x 30 would be 900. ½ of 900 is 450.
An answer of 450 would be too large.
layer
layer
layer
layer
5 blocks
10 blocks
15 blocks
20 blocks
10th layer
50 blocks
Square
Rectangle
Perimeter
32 cm
32 cm
Area
64 cm2
48 cm2
To get the 2nd
column, just
multiply the 1st
column by 5.
1st
2nd
3rd
4th
2x + 5 < 17
2x - 5 < -5
2x < 12
2
2
x < 6
4 x (3 + 8)
4 x (11)
44
(4 x 3) + (4 x 8)
(12) + (32)
44
The best way to predict what will
happen is to draw a straight line
that goes through (or close to) as
many points as possible. This is
called the line of best fit.
This PowerPoint presentation
brought to you by
Mr. Jeff Luce
Beachwood Middle School
Enjoy and good luck!